F Rosa Rubicondior: Cosmos
Showing posts with label Cosmos. Show all posts
Showing posts with label Cosmos. Show all posts

Tuesday 5 March 2024

Creationism in Crisis - "No! No! My God Is A Little God, And I Want Him To Stays That Way "


Webb Unlocks Secrets of One of the Most Distant Galaxies Ever Seen - NASA Science

Continuing a series showing how much more impressive the Universe is than religion's prophets ever thought it was.

How is it that hardly any major religion has looked at science and concluded, "This is better than we thought! The Universe is much bigger than our prophets said, grander, more subtle, more elegant?” Instead they say, “No, no, no! My god is a little god, and I want him to stay that way.” A religion, old or new, that stressed the magnificence of the Universe as revealed by modern science might be able to draw forth reserves of reverence and awe hardly tapped by the conventional faiths.

The James Webb Space Telescope (JWST) has just detected one of the most distant galaxies ever seen. Because the velocity of light through space is a finite quantity, this means that the radiation detected by the JWST left the galaxy when the Universe itself was only about 430 million years old, in other words about 13.4 billion years ago.

To put that into miles means calculating the distance light travels in a year and multiplying that by 13.4 billion. In one year, light will travel just over 16 billion miles, so the object the JWST has detected is about 214.4 trillion miles away, and, if it's still there, it will now be at least 13.4 billion years old - which is a really long time compared to the age the authors of the Abrahamic holy books thought.

To put that in perspective: here is how the Christian Bible describes the Universe:
The Universe as described in Genesis 1: 3-18
And God said, Let there be light: and there was light. And God saw the light, that it was good: and God divided the light from the darkness. And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day. And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters. And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so. And God called the firmament Heaven. And the evening and the morning were the second day. And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so. And God called the dry land Earth; and the gathering together of the waters called he Seas: and God saw that it was good.

Gen 1:3-10

[…]

And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years: And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so. And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also. And God set them in the firmament of the heaven to give light upon the earth, And to rule over the day and over the night, and to divide the light from the darkness: and God saw that it was good.

Gen 1:14-18
And here is how the scientists at NASA using the JWST and the Hubble Space Telescope describe just a tiny portion of the universe
Looking deeply into space and time, two teams using NASA’s James Webb Space Telescope have studied the exceptionally luminous galaxy GN-z11, which existed when our 13.8 billion-year-old universe was only about 430 million years old.

Initially detected with NASA’s Hubble Space Telescope, this galaxy — one of the youngest and most distant ever observed — is so bright that it is challenging scientists to understand why. Now, GN-z11 is giving up some of its secrets.

Vigorous Black Hole Is Most Distant Ever Found

A team studying GN-z11 with Webb found the first clear evidence that the galaxy is hosting a central, supermassive black hole that is rapidly accreting matter. Their finding makes this the farthest active supermassive black hole spotted to date.

“We found extremely dense gas that is common in the vicinity of supermassive black holes accreting gas,” explained principal investigator Roberto Maiolino of the Cavendish Laboratory and the Kavli Institute of Cosmology at the University of Cambridge in the United Kingdom. “These were the first clear signatures that GN-z11 is hosting a black hole that is gobbling matter.”

Using Webb, the team also found indications of ionized chemical elements typically observed near accreting supermassive black holes. Additionally, they discovered a very powerful wind being expelled by the galaxy. Such high-velocity winds are typically driven by processes associated with vigorously accreting supermassive black holes.

“Webb’s NIRCam (Near-Infrared Camera) has revealed an extended component, tracing the host galaxy, and a central, compact source whose colors are consistent with those of an accretion disk surrounding a black hole,” said investigator Hannah Übler, also of the Cavendish Laboratory and the Kavli Institute.

Together, this evidence shows that GN-z11 hosts a 2-million-solar-mass, supermassive black hole in a very active phase of consuming matter, which is why it's so luminous.

Pristine Gas Clump in GN-z11’s Halo Intrigues Researchers
A second team, also led by Maiolino, used Webb’s NIRSpec (Near-Infrared Spectrograph) to find a gaseous clump of helium in the halo surrounding GN-z11.

“The fact that we don't see anything else beyond helium suggests that this clump must be fairly pristine,” said Maiolino. “This is something that was expected by theory and simulations in the vicinity of particularly massive galaxies from these epochs — that there should be pockets of pristine gas surviving in the halo, and these may collapse and form Population III star clusters.”

Finding the never-before-seen Population III stars — the first generation of stars formed almost entirely from hydrogen and helium — is one of the most important goals of modern astrophysics. These stars are anticipated to be very massive, very luminous, and very hot. Their expected signature is the presence of ionized helium and the absence of chemical elements heavier than helium.

The formation of the first stars and galaxies marks a fundamental shift in cosmic history, during which the universe evolved from a dark and relatively simple state into the highly structured and complex environment we see today.

In future Webb observations, Maiolino, Übler, and their team will explore GN-z11 in greater depth, and they hope to strengthen the case for the Population III stars that may be forming in its halo.

The research on the pristine gas clump in GN-z11’s halo has been accepted for publication by Astronomy & Astrophysics. The results of the study of GN-z11’s black hole were published in the journal Nature on January 17, 2024. The data was obtained as part of the JWST Advanced Deep Extragalactic Survey (JADES), a joint project between the NIRCam and NIRSpec teams.
But it's not fair to blame the authors of the Bible for getting it so hopelessly wrong. They were doing their best with what little knowledge they had.

Wednesday 24 January 2024

Bible Blunders - How Bronze Age Goat-Herders Described The Universe - And How It Really Is


The Universe as described in Genesis 1: 6-18
Galactic Genesis: Webb Space Telescope Reveals Massive Star-Forming Complex

If you asked any 6-year-old to draw a picture of what they thought the world with the sky, sun, moon and stars would look like if you could stand outside it, chances are they would come up with something not massively different to the way it is described in Genesis:

And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters. And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so. And God called the firmament Heaven. And the evening and the morning were the second day. And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so. And God called the dry land Earth; and the gathering together of the waters called he Seas: and God saw that it was good …
Genesis 1:6-10

And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also. And God set them in the firmament of the heaven to give light upon the earth.
Genesis 1:16-18
And it gets even more laughable when you read in Daniel:
Therefore the he goat waxed very great: and when he was strong, the great horn was broken; and for it came up four notable ones toward the four winds of heaven. And out of one of them came forth a little horn, which waxed exceeding great, toward the south, and toward the east, and toward the pleasant land. DANI And it waxed great, even to the host of heaven; and it cast down some of the host and of the stars to the ground, and stamped upon them.
Daniel 8:8-10
And it doesn't get any better in the New Testament, where the authors also though Jesus would believe the stars would fall to Earth when they broke loose.
Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken.
Matthew 24:29
(Quoting Jesus)

And the stars of heaven shall fall, and the powers that are in heaven shall be shaken.
Mark 13:25
(Quoting Jesus)

And the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind.
Revelation 6:13

Saturday 23 December 2023

Small Gods - More Magnificance Of The Real Universe Revealed,


The Running Chicken Nebula comprises several clouds, the most prominent of which are labelled in this vast image from the VLT Survey Telescope (VST), hosted at ESO’s Paranal site. The bright star labelled Lambda Centauri is actually much closer to us than the nebula itself, and can be seen with the naked eye. The clouds shown in wispy pink plumes are full of gas and dust, illuminated by the young and hot stars within them. Overall, this image spans an area in the sky of about 25 full Moons, one of which is shown to scale for reference.

Credit: ESO/VPHAS+ team. Acknowledgement: CASU
New 1.5-billion-pixel ESO image shows Running Chicken Nebula in unprecedented detail | ESO

Astronomers using the European Southern Observatory in Chile have revealed in unprecedented detail, the so-called, 'Running Chicken' nebula, named not after creationists when asked a direct question, but because some people think it resembles a running chicken. The photographs were taken using the Very Large Telescope (VLT) as a series of images capturing different wavelengths of light, then carefully stitched together to form this detailed composite image.

The Running Chicken Nebula actually comprises several regions, all of which we can see in this vast image that spans an area in the sky of about 25 full Moons [1]. The brightest region within the nebula is called IC 2948, where some people see the chicken’s head and others its rear end. The wispy pastel contours are ethereal plumes of gas and dust. Towards the centre of the image, marked by the bright, vertical, almost pillar-like, structure, is IC 2944. The brightest twinkle in this particular region is Lambda Centauri, a star visible to the naked eye that is much closer to us than the nebula itself.

There are, however, many young stars within IC 2948 and IC 2944 themselves — and while they might be bright, they’re most certainly not merry. As they spit out vast amounts of radiation, they carve up their environment much like, well, a chicken. Some regions of the nebula, known as Bok globules, can withstand the fierce bombardment from the ultraviolet radiation pervading this region. If you zoom in to the image, you might see them: small, dark, and dense pockets of dust and gas dotted across the nebula.

Other regions pictured here include, to the upper right, Gum 39 and 40, and to the lower right, Gum 41. Aside from nebulae, there are countless orange, white and blue stars, like fireworks in the sky. Overall in this image, there are more wonders than can be described — zoom in and pan across, and you’ll have a feast for the eyes.

This image is a large mosaic comprising hundreds of separate frames carefully stitched together. The individual images were taken through filters that let through light of different colours, which were then combined into the final result presented here. The observations were conducted with the wide-field camera OmegaCAM on the VST, a telescope owned by the National Institute for Astrophysics in Italy (INAF) and hosted by ESO at its Paranal site in Chile’s Atacama Desert that is ideally suited for mapping the southern sky in visible light. The data that went into making this mosaic were taken as part of the VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS+), a project aimed at better understanding the life cycle of stars.

Contrast this small fraction of the visible universe (it occupies an area of the night sky about the size of 25 full moons) with the laughably naïve description of the Universe in Genesis 1: 6-18:
And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters. And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so. And God called the firmament Heaven. And the evening and the morning were the second day.

And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so. And God called the dry land Earth; and the gathering together of the waters called he Seas: and God saw that it was good. And God said, Let the earth bring forth grass, the herb yielding seed, and the fruit tree yielding fruit after his kind, whose seed is in itself, upon the earth: and it was so. And the earth brought forth grass, and herb yielding seed after his kind, and the tree yielding fruit, whose seed was in itself, after his kind: and God saw that it was good. And the evening and the morning were the third day.

And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years: And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so. And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also. And God set them in the firmament of the heaven to give light upon the earth. And to rule over the day and over the night, and to divide the light from the darkness: and God saw that it was good. And the evening and the morning were the fourth day.
The Universe as described in Genesis 1: 6-19
And, just to reinforce the ignorance of the authors of Genesis who guessed what they didn't know and got it so spectacularly wrong, here is a selection of deep-space images from the ESO:

Wednesday 13 December 2023

Creationism in Crisis - How Wrong The Bible's Authors Were! Why Would Anyone Believe Anything Else They Wrote?


The Universe as described in Genesis 1: 6-10
NASA’s Webb Stuns With New High-Definition Look at Exploded Star - NASA

The description of the Universe in the Bible is so naïve and radically different to the real universe, it beggars belief that there are grown adults who think the Bible is the inerrant word of a creator god.

There is nothing about the authors' description of it which can be described as allegorical or metaphorical, without the most contorted of mental gymnastics. It is not metaphorical or allegorical; it is quite simply wrong; spectacularly and conspicuously, with no shadow of a doubt, wrong!

What we now know are hundreds of billions of galaxies, each with maybe half a trillion stars, many with planetary systems, the authors of the Bible thought were little lights stuck to the underside of a dome over a flat Earth, that can be shaken loose and will fall down to Earth where they can be trampled on by a goat! (Daniel 8:10).

They described this flat Earth with a dome over it as standing on pillars and the fixed and immobile center of the Universe, round which a small sun orbits. They described the sky above the dome as being made of water. Their universe ran on magic.

Saturday 2 December 2023

How Science Works - Facing The Challenges of New Information


Discovery of planet too big for its sun throws off solar system formation models | Penn State University
Theists embrace certainty at the expense of truth because it feels safe in an uncertain world in which truth is subordinate to opinion. Scientists embrace doubt because it leads them closer to the truth in a world full of wonder and begging to be understood, where truth is supreme and leads opinion wherever it may go.

In other words, religion is unreasonable certainty; science is reasonable uncertainty.

So, if there is one thing theists hate, it's being challenged with new information. It's not just scientific information that shows how far removed from reality their founding myths, such as those in the Bible, are, but information that shows, for example, that several of the 'epistles' attributed to Paul were forgeries trading on his name to give them added authority, or that the description of his 'conversion' on the road to Damascus was actually a description of a temporal lobe epileptic seizure and that his reason for being there didn't make any sense in the geo-political and legal context of the times.

So heavily invested are most devout theists that inconvenient facts like these are not considered reasons to change their minds; they are considered reasons to look for excuses to deny and dismiss the evidence. There is a vast and very lucrative industry, especially in the USA, which specialises in selling people 'reasons' to deny the science and believe the myths in the Bible, for instance. Remaining stoically ignorant of science is even considered virtuous in some parts of the world where religions still have a strangle hold.

Contrast that with science, where the most exciting news is that someone has discovered something that means we need to revise our thinking and change our minds. With science, when the facts change, the intellectually honest change their minds; with religion, when the facts change, they try to change the facts because the beliefs are sacred.

An example of how science welcomes and embraces new evidence is the news that cosmologists have probably discovered a massive planet orbiting a sun that is too small for such a large planet orbiting so close to it. This might not sound dramatic but if confirmed, it will demand a reassessment of how we think planetary systems form.

Sunday 11 December 2022

Ecology News - How Photos From Space Have Changed Our View of Earth And Our Place In The Cosmos

Looking back from beyond the Moon: how views from space have changed the way we see Earth
Earth is a bright pixel when photographed from "Voyager 1" six billion kilometres out (past Pluto).
NASA
Updated by Kevin M. Gill using modern image-processing techniques, 2020
In the words of the late, great Carl Sagan, looking at a picture of a tiny image of Earth seen through one of the rings of Saturn:
Consider again that dot. That’s here. That’s home. That’s us. On it, everyone you love, everyone you know, everyone you ever heard of, every human being who ever lived, lived out their lives. The aggregate of all our joys and sufferings, thousands of confident religions, ideologies and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilizations, every king and peasant, every young couple in love, every mother and father, every hopeful child, every inventor and explorer, every teacher of morals, every corrupt politician, every superstar, every supreme leader, every saint and sinner in the history of our species, lived there on a mote of dust, suspended in a sunbeam.

The earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that in glory and in triumph they could become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on scarcely distinguishable inhabitants of some other corner of the dot. How frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds. Our posturings, our imagined self-importance, the delusion that we have some privileged position in the universe, are challenged by this point of pale light.

Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity — in all this vastness — there is no hint that help will come from elsewhere to save us from ourselves…… It is up to us. It’s been said that astronomy is a humbling, a character-building experience. To my mind, there is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly with one another and to preserve and cherish that pale blue dot, the only home we’ve ever known.
The ludicrous Creationist claim that the Universe is somehow 'fine-tuned' for life is given the lie by the simple realisation that, a short distance from the surface of our planet, life becomes completely untenable in a very hostile environment. Life is 'fine-tuned for Earth because the process of evolution, by which living things became the way they are, is the tuning process.

In the following article reprinted from The Conversation under a Creative Commons license, Professor Alice Gorman, Associate Professor in Archaeology and Space Studies, Flinders University, Australia, looks at the way images of Earth taken from space, have influenced our thinking about Earth and our place in the Cosmos.

The article is reformatted for stylistic consistency. The original can be read here:

Wednesday 21 July 2021

How Come no Religion Ever Told Us the Universe is This Amazing?

Five galaxies as seen with MUSE on ESO’s VLT at several wavelengths of light
Galactic fireworks: new ESO images reveal stunning features of nearby galaxies | ESO

A stunning set of photographs of nearby galaxies and an accompanying video, has been released by the European Southern Observatory (ESO). They were obtained by ESO's Very Large Telescope (VLT).

By combining these observations with data from their partner, the Atacama Large Millimeter/submillimeter Array (ALMA), they are shedding new light on the what triggers gas clouds to condense to form these galaxies, the details of which remain a mystery.

Wednesday 19 December 2012

Oh Creation! Scientists Find 'Habitable' Planet

Creationists! Have you started work on your excuses for when science finds evidence of life on other planets yet? Maybe now would be a good time to start because there was something you might find interesting in the Independent today:
Scientists find 'habitable' Tau Ceti planet.

Scientists have discovered a ‘habitable’ planet that orbits a sun visible to the naked eye. The world is just 12 light years away, is between two and six times bigger than the earth, and is thought to be circling Tau Ceti, a star almost identical to our sun.

The planet is one of five orbiting Tau Ceti, and lies within the star's habitable zone. It is thought to have five times the Earth's mass. Also known as the “Goldilocks zone”, the habitable zone is the orbital region that is neither too hot nor too cold to allow liquid surface water and, potentially, life.

Details of the discovery are to appear in the journal Astronomy & Astrophysics.

Because of the difficulties involved in detecting extra-solar planets, most found so far have had high masses. The Tau Ceti planetary family is thought to be the lowest mass solar system yet detected. Read more...
Of course, merely being in the 'Goldilocks zone' is a far cry from this planet actually being suitable for the evolution of living organisms but it shows that planets developing in this zone with respect to their suns is by no means unusual. This one was found, on a cosmological scale, in our back yard and orbiting a star which was thought to be an unlikely candidate for a planetary system.

But how will the world's major religions of Christianity and Islam react if we ever find evidence of life having arisen and evolved on another planet in another solar system?

For one thing it will put paid to any notion that somehow the formation of the first replicators is so unlikely as to be practically impossible, and so, even if the rest of evolution is accepted, some form of intelligence must have been involved. In fact it will show that it's not only possible but has happened at least twice, and in this small area of a vast Universe.

But of course, the entire basis of both Islam and Christianity is that a god created an entire Universe for somewhere to create this one special planet for humans so they could worship and obey him. What on earth will they make of it if they find there are other sentient beings living in a different part of the universe? Will their god have created them as something else to worship and obey him? Even if there are no sentient beings who could worship a creator, how will creationists explain them when, according to the Bible, a god created animals on earth for humans. What will it have created them on other planets for?

And how will Creationists explain away the self-evident fact that, once life gets going on another planet, it leads to diversification which will inevitably be different to the way it diversified on earth but in ways which are entirely amenable to reason given the principles of Darwinian Evolution in a different environment with a different history?

There are a couple of verses in the Bible that always embarrass Bible literalists:
And Cain went out from the presence of the Lord, and dwelt in the land of Nod, on the east of Eden. And Cain knew his wife; and she conceived, and bare Enoch: and he builded a city, and called the name of the city, after the name of his son, Enoch.

What's embarrassing is that somehow, in the 'Land of Nod', Cain managed to find a wife. Where did she come from? Was there another creation in a neighbouring valley; a creation which the author of Genesis forgot to record? And did these people also 'fall from grace' in another Garden of Eden and need to be saved? Did this happen a lot in those days?

With a distance of only 3.7 pc, HD 10700 [Tau Ceti] is the third closest star reported to be a host to a putative planetary system after Epsilon Eridani (Hatzes et al., 2000) with a distance of 3.2 pc and α Centauri B (Dumusque et al., 2012) with a distance of 1.3 pc, though both of these remain to be confirmed and Zechmeister et al. (2005) have cast considerable doubt on the existence of a planet around Epsilon Eridani. This makes HD 10700 an ideal target for future direct-imaging missions. The signals we find, which suggest the presence of low-mass planets, are consistent with both current theoretical models for low-mass planet formation and extant observational evidence for the presence of low-mass planets in the immediate Solar neighbourhood.

How much more embarrassing is it going to be to explain yet another creation, this time not just in a nearby valley but in a different part of the galaxy? How will it affect the 'special and personal relationship' they like to imagine they have with the creator of the universe who naturally created it all for them?

Imagine having to re-write Genesis in view of the fact that this supposed creator god had created not just one planet with a dome over it from which two lamps hang, but billions of them, each with a lamp or two hanging from their own domes.

Will they each have had an Adam and Eve, talking snake, original sin and a flood, or will the creator have arranged things differently there? Will there have even been sin and a need to be 'saved' by the grotesquely barbaric act of nailing someone to a cross, or will people on other planets have eternal life and freedom from pain and misery with no need to look forward to going to Heaven?

Or will the creator have rigged things there too, so the people have to turn to a priesthood to be told how to be made safe from a bogeyman in the sky and a future of unimaginable horror for eternity?

There will be a need to re-write Genesis, though undoubtedly there will be forlorn Creationists, religious apologists and others whose livelihood depends on people believing these old Bronze Age myths, who will make increasingly desperate attempts not to have to, or to construct some laughable reinterpretation of it to make it look like multiple creations are really what it's all about after all.

But the simplest and most dignified recourse will be to bin the whole thing and consign it to the dustbin of history with other primitive myths, where it is long overdue. One wonders if they will ever find the self respect and dignity to accept reality, do the sensible thing and look for an honest way to earn a living.

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Sunday 25 March 2012

Moon's Origin. Have I Missed Something Here?

Findings Cast Doubt on Moon Origins - ScienceNOW:

I confess to being puzzled by the above article from Science NOW. The argument goes:

Most scientists believe Earth collided with a hypothetical, Mars-sized planet called Theia early in its existence, and the resulting smash-up produced a disc of magma orbiting our planet that later coalesced to form the moon.
...

One way to test the hypothesis is to look at the isotopes of particular elements in rocks returned from the moon. Atoms of most elements can occur in slightly different forms, called isotopes, with slightly different masses. Oxygen, for example, has three isotopes: 16O, 17O and 18O, indicating differences in the number of neutrons each nucleus contains. Compare any two samples of oxygen found on Earth and you'll find the proportions of 16O, 17O and 18O isotopes are almost identical in the two samples. The proportions found in samples from meteorites and other planets like Mars, however, are usually different. So if you find that a sample has the same oxygen isotope composition as one from Earth, then it's very likely the sample came from our world.

Previous research has established that the oxygen isotope composition of lunar samples is indistinguishable from that of Earth. Since 40% of the moon is supposed to have come from Theia (which presumably would have had a different isotope composition), this might spell trouble for the giant impact hypothesis. But it's possible that Earth may have exchanged oxygen gas with the magma disk that later formed the Moon shortly after the collision, explaining why the results are the same.

In the new research, published online today in Nature Geoscience, geochemists led by Junjun Zhang at the University of Chicago in Illinois, together with a colleague at the University of Bern in Switzerland, looked at titanium isotopes in 24 separate samples of lunar rock and soil. The proportion of 50Ti to 47Ti is another good indicator of whether a sample came from Earth, and, just as with oxygen, the researchers found the moon's proportion was effectively the same as Earth's and different from elsewhere in the solar system. Zhang explains that it's unlikely Earth could have exchanged titanium gas with the magma disk because titanium has a very high boiling point. "The oxygen isotopic composition would be very easily homogenized because oxygen is much more volatile, but we would expect homogenizing titanium to be very difficult."


I'm no cosmologist, but to me it makes perfect sense for the resulting planet and the accretion disc of resulting magma to be fairly well homogenised on impact rather than the accretion disc being derived mostly from one or the other planet, so I would have thought a result showing the the proportions of 50Ti and 47TI being indistinguishable between the lunar and earth samples was a good indicator of a common origin rather than evidence against it.

But maybe I've misunderstood something...

'via Blog this'

Thursday 8 September 2011

The Kalâm Cosmological Fallacy

The Kalâm Cosmological Argument (KCA) has its origins in medieval Islam of the Kalâm tradition but it has been adopted by Christian apologists, notably William Lane Craig, who appear to believe it proves only the Christian god of the New Testament, ignoring the fact that it was originally formulated to ‘prove’ the Islamic god of the Qur’an.
  1. Everything that has a beginning of its existence has a cause.
  2. The universe had a beginning.
  3. Therefore the universe had a cause.
  4. That cause must be God.

In essence, the KCA is arguing that:
  1. There can be no natural cause for the universe.
  2. Therefore the cause must be supernatural.
  3. The only possible supernatural cause must be whichever god the argument is being used to promote.

Clearly, we only need to refute 1 for the entire argument to collapse since this is the premise from which the rest is assumed to flow. We only need to show that a natural cause is possible to refute the KCA. The onus of proof lies with those using the KCA to prove their implicit claim that the cause MUST be supernatural, so the onus is upon them to refute our possible natural cause AND show that there are no other possible natural explanations.

Unless they are able to do so, reliance on the KCA is dishonest and disingenuous.

Everything that has a beginning of its existence has a cause.

This ‘law of causality’ is simply untrue, as quantum mechanics has established. There are two well-known phenomena which illustrate this:
  1. Decay of the energy state an excited electron to its ground state, with the emission of a photon, is known to be random and unpredictable. Based on observations, science can calculate the probability of this event occurring in any given time period, but there is no way the precise moment of decay for any given excited electron can be predicted.
  2. The decay of a radioactive atom by emission of a particle has no cause. There is no detectable difference between a radioactive atom which is about to decay and one which is not. As with the decay of an excited electron to its ground state, science can calculate the probability of radioactive decay in any given period of time but can never predict the moment of decay for any one atom.

The ‘law of causality’ is assumed to apply (note ‘assumed’, as it has not been established for all events) at the level over which Relativity applies, but not at the quantum level, where relativity is known not to apply. The Big Bang was a quantum event so, even if causality is accepted as a law, it demonstrably does not apply at the quantum level.

The universe had a beginning.

This argument assumes that, with space and time being part of the universe (something which has been known since 1905 when Einstein formulated the Theory of Relativity) there can be any meaningful sense in which a ‘beginning’ can be defined in the absence of a time and a place for it to begin.

But why do we need to assume a beginning? Why is it not possible for the universe to have come from something else? In fact, there is no reason to assume it didn’t; that our universe could not have arisen as a quantum fluctuation in a non-zero energy field in some pre-existing universe. The assumption that our universe is all that there is is just that, an assumption, not an established fact. It simply has no validity.

There is nothing in Relativity or Quantum Theory which prevents a universe from originating in some pre-existing universe. Indeed, there is no fundamental law requiring that ‘nothing’ should be the default state of existence rather than something. Apologists who challenge science to explain why there is ‘something rather than nothing’ have the onus of proof that ‘nothing’ should be assumed in the absence of a reason for ‘something’.

It must be said that those who devised the KCA in the middle ages knew nothing of quantum mechanics, nor that the ‘beginning’ of universe was a quantum event, so can be excused for this error. Neither were they aware of Big Bang cosmology or Relativity which show that the Universe as we experience it must have once been very much smaller and could have arisen from an earlier Universe with its own internal space and time.

However, the same cannot be said for modern day apologists either for Christianity or for Islam, for whom ignorance of quantum theory and cosmology, and its basic refutation of the Kalām Cosmological Argument can only be due to choice. These modern-day proponents of the KCA can no longer rely on assumptions which seemed valid and obvious to mediaeval thinkers; they now have to refute the many arguments physicists can put up and show there are no other possible natural explanations. Unless they are able to do so, the KCA is dishonest and disingenuous, based as it is on false premises.

But, let us put that all to one side and assume for the sake of argument, that apologists have established the basic premises of the KCA so there MUST be a supernatural explanation for the universe.

Why does it follow that the only possible supernatural explanation, of all the possible supernatural explanations, is the actions of the god they are promoting? The fact that precisely the same argument is put forward to support the god of the Qur’an, indeed that the KCA used by Lane Craig and other Christian apologists is a straight plagiarism of an Islamic argument, shows that the final conclusion does not flow from the argument at all. In fact, one could substitute the name of any god, or indeed any other notion and the argument would have the same validity. Using the KCA it is just as easy to make a case for the universe being created by Zeus, a Flying Spaghetti Monster, a committee of Graeco-Roman gods or indeed a peanut-butter sandwich.

And, perhaps more importantly, why do all the assumptions they make regarding the origins of the universe - that it must have had a beginning, therefore it must have had a cause – not apply to their preferred god? Why do they need to abandon the very principles upon which their argument relies in order to make it work for them?

How do they all get away with the same trick? They do it by begging the question. It's a sleight of hand of which any conjurer, card sharp or flimflam man would be proud. The trick is to assume that, in addition to the set of things which begin to exist, there must be a set of things which don't begin to exist from which to select a 'cause'. Apologists like William Lane Craig rely on their audience to unconsciously populate this set with the locally popular god and only the locally popular god. Having set the audience up with this begged question, they then let them draw the 'obvious' but invalid conclusion; invalid because the assumptions of the existence of this set of things which don't begin to exist, and what it contains, is invalid. Even if such a set exists there is no reason we can't put any daft notion we wish in it. More importantly, there is never an explanation of why it could not contain something perfectly natural, requiring no supernatural involvement at all.

Clearly, given the state of our knowledge of cosmology and quantum mechanics, we can now confidently state that the basic premises of the KCA are not valid. Given the modern availability of information on these subjects we can, with equal confidence, state that those who use it are being dishonest and disingenuous, and very clearly pursuing some other agenda than truth.

A moment’s thought will show that the KCA is merely the God of the Gaps, the Argument from Personal Incredulity and the Argument From Ignorance fallacies dressed up to look respectable. It is no less dishonest for all that. In essence, the argument is nothing more than "I don't know how it happened, therefore no one knows how it happened, therefore it is unknowable, therefore it must have been supernatural, therefore it must have been [insert required answer]".

What is plainly going on here is that apologists are aiming their arguments not at non-believers and scientists who can see through their fallacies but at those who are ignorant of science and/or those who merely want their pre-existing superstitions ‘confirmed’ by scientific-sounding or seemingly logical arguments without being too concerned about their validity. The argument is aimed at those who, through parochial ignorance, are culturally pre-disposed to assume that, if one can make the case for a supernatural explanation for something, it stands to reason that it must be the locally popular god - the one assumed to be the only god on offer - and that this then proves the locally popular god is real. It does nothing of the sort of course. All it demonstrates is the ability to ascribe something not understood to whatever cause one wishes it to be.

There is no truth-seeking agenda at work, merely a desire to exploit a credulous and gullible market and milk it for all it’s worth.

[Later edit] For a formal debate on the KCA between myself and Christian blogger, Richard Bushey, see Debate - The Kalam Cosmological Argument

Further reading:
  1. God: The Failed Hypothesis. How Science Shows That God Does Not Exist. Victor J. Stenger, Jan 2007. Prometheus Books. IBSN 1591026520.
  2. A Brief History of Time: From the Big Bang to Black Holes. Stephen W. Hawking, 1988. Bantam. IBSN 9780553109535.
  3. The Kalâm Cosmological Argument. William Lane Craig. August 2000. Wipf and Stock Publishers ISBN 9781579104382





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Friday 15 July 2011

Middle For Diddle or Shifting The Evidence

One of the more amusing claims of the Abrahamic religions is that their god created the entire universe just for somewhere for its special creation, Man, to live. It’s the same anthropocentric view which the early authors of the Bible took for granted and so told stories of a creation with humans as the only important species on a world around which everything else revolved. A view regarded as ‘common sense’ even some 500 years ago, so much so that to doubt it was a heresy.

Creationists require no more evidence for this view than that these stories were eventually written down in a book. However, some of the more educated Abrahamic theists who know that science shows these stories are just that, still cling to this anthropocentric view.

These people accept the evidence of an expanding universe, that the rate of expansion extrapolated backwards shows an origin as a singularity some 13.5 billion years ago, though they like to place their god in this process as the instigator of the Big Bang. They will readily accept the evidence for expansion in the Red Shift, and of the Big Bang itself in the cosmic background microwave radiation - which is exactly as we would expect it to be if there was a Big Bang 13.8 billion years ago.

They accept that Earth is a small planet orbiting an average star somewhere in an arm of a spiral galaxy; that this star is one of several hundred billion stars which together form just one of several hundred billion similar galaxies in a vast universe.

However, many (though it has to be said, not all) of these educated theists will point to one single fact as evidence that somehow Earth is at the centre of it all.

They will point to the fact that the Red Shift is the same in all directions and is directly proportional to the distance between Earth and the object being observed.

This, they will claim, is proof that everything is moving out from Earth equally in all directions, so Earth must be at the very centre of the Universe. Earth must occupy the very point at which the Big Bang occurred and thus occupies a very special place in creation.

So, let’s look at this claim in some detail.

Firstly, a short explanation of the Red Shift, and why it shows an expanding universe.

[Skip the next five paragraphs on the Doppler Effect if you know it already.]

The Red Shift appears to be a form of the Doppler Effect, something with which everyone will be familiar, even if they didn’t know it had a name. Everyone will be familiar with the phenomenon of the sound of an approaching train or emergency vehicle with sirens, seeming to change in pitch to a lower register as it passes.

What is happening is that sound waves are being compressed as the train or emergency vehicle is moving towards you and being stretched out as it moves away. The pitch of a sound is a measure of the wave length so peaks closer together are heard as a higher pitch than those further apart.

This is the same phenomenon by which police radar traps can measure the speed of a car by bouncing radio waves off it and measuring the change in wave length. The change in wave length is directly related to the speed of the car relative to the radar gun.

The same phenomenon is observed with all moving objects which emit or reflect electromagnetic waves, like radio waves, microwaves or light. The light emitted by an object like a star which is moving away from the observer, will have its light shifted to a lower wave length than would be the case if it were stationary relative to the observer. If it were moving toward the observer the light would be shifted toward a higher frequency.

In colour terms, a higher wave length means the light is bluer; a lower wave length means it is redder. This is the ‘Red Shift’ and how we know that, on a large scale, objects are moving away from us.

Now, on first sight this appears to confirm the anthropocentric view that we are at the centre of things since the Red Shift is the same in all directions.

However, there is one little inconvenient fact for this theory:

All the evidence shows that the Red Shift is the same for all points in the universe. It matters not where you place the observer.

So, what’s going on?

The universe is expanding, just as the Red Shift shows, but it is expanding not by all objects moving away from one another, but by the space between them increasing. This is a small but subtle difference. In fact, the Red Shift is not a true Doppler effect. The Red Shift is caused by the light having further to travel as each peak is transmitted because the space through which it is travelling has increased.

To understand this, consider dots drawn on the outside of a balloon as it is being inflated. The dots are not moving across the surface of the balloon out from some central point; rather, they are moving away from one another because the rubber between them is being stretched. And this holds true for every point on the surface of the balloon. An observer on any one spot would appear to see all point moving away at a rate which is directly proportional to their distance from the observer.

Earth is at the centre of the universe but so is everything else, because the singularity was the centre and the singularity is expanding as space is created.

The centre of the universe is all of the universe, just as it was in the singularity.





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Saturday 23 October 2010

On Quantum Cats and Future History

Hold onto your hat. This could get a little rough.

At the heart of quantum mechanics lies a paradox. All experimentation has shown that a particle has a dual nature - the so-called quantum duality. It is, at the same time, a particle or 'quanta' of energy, and a wave. It has been shown that a single photon, fired at two slits in a screen, passes through both slits simultaneously and creates an interference pattern with itself on a photosensitive detector behind the slits. And it's not just two slits. The same effect will be seen with three, four, five slits or as many slits as you like.

Furthermore, it has also been shown that, when we try to observe a particle on its journey through the two slits, by placing a detector behind one of them, the interference pattern disappears and the particle behaves like a perfectly respectable single entity and passes dutifully through the slit with the detector and not through the other one.

Observation has (apparently) caused the waveform to collapse into a particle. Seemingly, our observation of it has changed the nature of reality with respect to the particle being observed and it now only has one future.

The conclusion is inescapable, even if a little disturbing. All particles have many futures, possibly infinitely many futures, and they all take all of them.

The experimental data showing the collapse of the wave into a single future by our observation of it has also lead some people to conclude that somehow we create reality by detecting it, even leading some to speculate that there was no reality until mankind was there to observe it.

This conclusion is the 'Copenhagen Interpretation' of quantum duality and has lead to the multiverse hypothesis, where all possible universes, representing all possible futures potentially co-exist but we determine which one by our observation.

Cue, Schrödinger's Cat.

In an attempt to repudiate this view, Erwin Schrödinger devised a thought experiment in which a live cat is placed in a sealed box, with air, food and water, and a phial of cyanide linked to a device which breaks it, so killing the cat, on detecting a particle emitted by a single atom of a radioactive isotope.

In this system, the cat's future is inevitably linked to a single quantum event - a radioactive decay - which is purely random and independent of any other event. The future of the isotope is either decayed or not and the future of the cat is either alive or dead. However, since the emitted particle will exist simultaneously in both possible futures, and the isotope will thus be both decayed and not decayed at the same time, so the cat will be simultaneously both alive and dead.

However, if the Copenhagen Interpretation is correct, this paradox will only be resolved when we open the box and observe the state of the isotope. Only then will the cat's future be determined; until that point, according Copenhagen, the cat will be both dead and alive.

This, of course, is a highly anthropocentric view of reality and assumes that observation is a uniquely human ability. In fact, it's naive. 'Observation' is carried out by detecting the effect(s) of a particle interacting with one or more other particles. Observation is witnessing the effects of quantum entanglement, when the future of one particle becomes entangled with that of another, and this has been happening since the beginning of time regardless of whether humans were present to witness it or not.

Schrödinger had intended his thought experiment to show the illogicality of the Copenhagen Interpretation but it failed to do that. What it lead people to conclude is that we discover which future we are in when we observe reality. When we open the box we discover whether we are in a future in which the cat is alive, or one in which it is dead. The multiverse hypothesis is not scratched by Schrödinger's cat.

The late, great Richard Feynman, working at Caltech, went some way towards resolving this problem. He showed that all possible histories with respect to a single particle can be expressed as a probability distribution expressing the 'sum over histories' and that this distribution is the wave we see when we observe the wave nature of a quantum event.

He has also shown that for complex systems, these waves 'decohere' to produce what may be a single future. This apparently refutes the multiverse hypothesis, but it may not do. It is still possible to view the future histories of small objects like atoms and molecules as having multiple possible futures because we know they, like particles, take all possible paths through spacetime. It could be that decoherence occurs only above a certain level of complexity.

The largest objects which have been shown to pass simultaneously through both slits in a two slit experiment are molecules of buckminsterfullerene (C60) consisting of sixty carbon atoms arranged in a geodesic - the dome-shaped structures designed by the architect Buckminster Fuller. Sixty atoms is large for inorganic molecules but still quite small for organic molecules, and many orders of magnitude smaller than an organism such as a cat, dead or alive. And we know that if we throw a dead cat at a couple of slots in a wall, it won't go through both, don't we? In fact, unless our aim is good, it'll most likely go through neither and we'll see the dead cat bounce.

So what do we make of this? Small objects have many possible futures, yet larger objects have only one - and we don't yet know where the dividing line is...

Rosa's speculation:
It could also be that what we see as 'now' is an advancing front of decoherence as we move into an array of futures. That NOW is only the interface between our macro-reality and micro-futures operating at the quantum level.




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Monday 27 September 2010

What Makes You So Special?


Your Story

[Edit. This article has now been greatly expanded into my book, What Makes You So Special? : From the Big Bang to You, available in paperback or ebook for Kindle]

Bear with me a while because yours is a long story but it's a story very much worth telling.

About 13.7 billion years ago the universe came into existence as a singularity. We know this because the universe is expanding in all directions at a measurable rate. Projecting this backwards leads to a time when the entire universe occupied a single point of nearly infinite density; a black hole or singularity.

We also know that time and space are part of the universe and do not exist independently of it, so there is no sense in which we can talk of where and when this singularity occurred in some pre-existing space-time dimension.

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