Sunday, March 25, 2012

God Said Stars Are Made from Water?--Exposing PseudoAstronomy

God Said Stars Are Made from Water?:
This is a quick post that is kinda another “WTF?” post from something that the young-Earth creationist (YEC) Institute for Creation Research’s (ICR) “science” writer Brian Thomas put out in his article, “What Causes a Galaxy’s Magnetism?
About the first two-thirds of the article is basically parroting a press release about a new map of the Galaxy’s magnetic field. The jist of the press release is that a team of astronomers has mapped our galaxy’s magnetic field to higher precision and accuracy than had been done previously with an eye towards studying extragalactic magnetic fields: you need to know what’s in the way before you can figure out what’s going on with a far-off object. It can also act, over time, on slightly magnetized dust and gas within the galaxy.
But – gasp! – we don’t know why the Galaxy has a magnetic field to begin with! As the ICR article states, “Secular astronomers are no closer to understanding what could cause galactic magnetic fields than they were when they first detected the fields over a century ago.” (That’s the first sentence of the article.) You kinda know what’s coming next … a God of the Gaps argument.
From what I can tell – and this is WAY outside of my field so if any astronomer who knows more about this reads this post, please post in the Comments – the statement is true that we don’t really know what caused the Galaxy’s magnetic field to form in the first place. But, a very recent article has an idea that it may have formed from a background field “seed” that became stronger as the Galaxy formed. So it’s not like we’re totally ign’ant, there are ideas out there.
But no, apparently that’s not good enough. Creationists have to figure it out from the Bible, and …
“In 2008, physicist D. Russell Humphreys proposed a Bible-centered model for the origin of magnetic fields that is consistent with the overall strength of the spiral Milky Way’s magnetic field. If God formed the stars and galaxies during the fourth day of creation using water that He had created earlier, and if those water molecules were all originally aligned, their tiny magnetic fields would have combined to form a galactic magnetic field that has decayed to something that looks like today’s observed field strength.”
Yup, that’s right. The premise of this creationist proposal is that stars are made from water. I really don’t think anything else needs to be said at this point.

Mystery human fossils put spotlight on China--Science Daily

Mystery human fossils put spotlight on China: Fossils from two caves in southwest China have revealed a previously unknown Stone Age people and give a rare glimpse of a recent stage of human evolution with startling implications for the early peopling of Asia.
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Evolutionary surprise: Developmental 'scaffold' for vertebrate brain found in brainless marine worm--Science Daily

Evolutionary surprise: Developmental 'scaffold' for vertebrate brain found in brainless marine worm: Scientists report finding some of the genetic processes that regulate vertebrate brain development in the acorn worm, a brainless, burrowing marine invertebrate.
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Friday, March 23, 2012

The Faint Young Sun Paradox

Posted 22/03/2012 by eyeonicr in Daily (pseudo)Science Updates. Tagged: ICR, Astronomy, Creationism, Science,Skeptic, Brian Thomas, Skepticism, Global Flood, Faint young sun paradox.
The Faint Young Sun Paradox:
If our Sun is, as we believe, a perfectly normal 4.5 billion-year-old main sequence star, we would expect that, say 3 billion years ago it would be largely the same as another main sequence star of that age. And, 3 billion years ago, we would thus expect that the sun would output around 70% of the energy it does today. Unfortunately, this is too little to sustain liquid water on the surface of the Earth. And yet, we know that there was.
This, then, is the faint young Sun paradox.
The Sun, through a telescope (a bad idea, but somebody managed it...)
As you can probably guess, this has the creationists jumping for joy. Never mind our very ability to predict this kind of thing being a testament to our models of stellar evolution. Hence, the DpSU for Wednesday: Can Solar ‘Belch’ Theory Solve Sun Paradox?

The notion that the earth and cosmos are billions of years old continues to present serious problems for evolutionary scientists. For instance, billions of years ago, the sun would only have glowed faintly, leaving nearby earth totally frozen. But with no liquid water on earth’s surface, how could life have evolved and become fossilized so long ago?
This conundrum has been called the “faint young sun paradox,” and after 25 years of research, it remains just as problematic as ever. Scientists have tinkered with models of what they thought were atmospheres that might have kept earth warm. But sunlight would have prevented an ammonia-caused greenhouse earth, and earth’s oldest rocks show that the atmosphere was not dominated by the mild greenhouse gas carbon dioxide either.
There are, it should be pointed out, other greenhouse gases. And the people who came determined that “earth’s oldest rocks show that the atmosphere was not dominated by the mild greenhouse gas carbon dioxide” – you’ll note that Mr Thomas forgot to add that they are ‘supposedly’ Earth’s oldest rocks – came up with their own solution to the paradox. And their results were disputed – I’m not sure of the outcome.

Since researchers have found no solutions to the faint young sun paradox through planetary geophysics, some now look to reconfigure the sun’s evolutionary history. A team of researchers funded by the NASA astrobiology program plans to test new models of a sun that may have been large enough and that also existed early enough to have heated the earth billions of years ago.
Penn State University’s Steinn Sigurdsson will lead the team using a powerful computer program to model the early sun. He told Astrobiology Magazine that “to provide enough planet warming without overstepping any solar constraints, the Sun had to lose the extra mass in roughly the first few hundred million years.…That implies a solar wind that is about 1,000 times faster than what we currently observe.” Sigurdsson and his team plan to look for “stretch marks” left by such a tremendous break in solar wind.
A testable hypothesis! The link is here.

In order to make the solar physics work out correctly, the team needed to invent a way for the sun to discharge incredible amounts of its own mass within a narrow time range. Otherwise, the question of why the early sun might have been too faint for life on earth would be replaced by the equally vexing question of why today’s sun does not scorch the earth.
Or, possibly, they could try a different mechanism to solve the paradox.

Of course, even if the researchers cobble together ancient events that fit with physics, that does not mean that the events actually happened.
I need to remember this quote next time Flood Geology comes up: it shall be my new “When do the differences enter the conversation?”
I mean seriously, pretty much every model that tries to resolve this paradox has better support than the weird ideas the creationists come up with to explain away the impossibility of their Flood. Indeed, judging by their standards of evidence they would all be correct, which would ironically itself present a paradox.

For example, if a mega solar “belch” could have enabled the early sun to heat up earth enough for ancient life to survive, that would still not solve the problem. It would merely change the question from “How could a young sun not have been so faint?” to “What could have forced a young sun to eject so much material so quickly?”
Hey, science! That’s how it works, Brian: each ‘answer’ raises more and more questions. Scientists have had centuries to come up with a way to keep themselves permanently gainfully employed: you must admit that they pulled it off.

But the biblical model of a young world suffers none of these conundrums. The faint young sun paradox remains unsolved for those who insist on a long-ages cosmology. And its solution, despite upgrades in scientific software, promises to evade the naturalistic view.
The idea that the earth and sun were both created during the creation week thousands of years ago, with the sun immediately able to provide life-supporting light as Genesis records, is perfectly consistent with scientific observations.
Er, no – again, creationists are always making up these borderline-possible (if at all) models with no evidence better than “you can’t say it’s impossible – at least, not in the time it’ll take for me to change the subject.”
So, tu quoque Brian. But there seems to be no good reason why science can’t eventually agree on the correct solution: perhaps, if they were all true to a degree, you wouldn’t need such high levels of greenhouse gasses; the solar wind wouldn’t have to have been as strong etc. But the creationists? Well, if it comes down to it, I need to ask the ICR some day which model of the Flood they support: as it stands B.T. is just jumping between those that suit him at a given moment.

Filed under: Daily (pseudo)Science Updates Tagged: Astronomy, Brian Thomas, Creationism, Faint young sun paradox, Global Flood, ICR, Science, Skeptic, Skepticism