Exposing PseudoAstronomy

November 29, 2012

Mercurian Ice Confirms Noah’s Flood! (or something like that)


Introduction

It’s that time of the quarter where I profusely apologize for not posting a lot, and where I look back at the blog and worry that it’s just turning into an announcement place for my podcast, which I’m really hoping to avoid. Those things aside …

The issue of Science this week has a rather large number of articles that I find interesting, among them one on Saturn’s rings, the age of the Grand Canyon, and one that’s gotten a lot of press: confirmation of ice at Mercury’s poles.

For more on the actual discovery of Mercurian ice (or more, confirmation, since we were already pretty sure it was there), Phil Plait (“The Bad Astronomer”) has a good blog post up about it. I’m going to assume that you have the background of that for the rest of this post.

Meanwhile, it didn’t take long for someone to use this for their own pet pseudoscience.

How’d the Ice Get There?

We know for a fact that chunks of ice and chunks of rock fly about the solar system and crash into things. Look at nearly any solid body in the solar system and you see impact craters that are a testament to that fact. Look at the asteroids and comets we see today and there is a clear mechanism that still exists and impact cratering is an ongoing process.

In the inner solar system, it is estimated that very, very roughly 10ish% of all impacts are from comets. In the outer solar system, the fraction is likely much larger, but that’s a different topic.

Comets are made of ice and rock, and when they hit an object, some of the ice can be captured. If the environment is stable for ice (as in, it’s below the freezing point of water and there’s enough pressure to keep it from sublimating – turning directly from a solid to a gas), then the ice will remain. Paradoxically, while Mercury is the closest known planet to the sun, there are areas of its poles that are in permanent shadow and hence, ice can be stable if it’s buried under something.

So, the very simplified model is that a comet strikes, ice from the comet melts/vaporizes, some is trapped by the planet’s gravity and re-solidifies in a permanently shadowed region, it’s covered by other debris from the impact, and you have stable ice that isn’t going anywhere.

A smaller part of the story but that’s relevant to this particular pseudoscience is that some of the material that’s covering the polar ice is organic material. As in, “compounds composed of carbon, hydrogen, and other elements with chain or ring structures” according to one online definition (my last chemistry class was 10th grade …). We are NOT talking about dead plants and animals.

Where does organic material come from? It can obviously come from living things, but several studies in the past few years have shown that organic materials can seemingly easily form in space and be carried on asteroids or comets. It’s possible that that is one contribution to the seeding of life on Earth …

Noah’s Flood

… or at least, that’s if you’re a naturalistic secular heathen.

According to Mercury Ice Find Renews Old Riddle, organic material means that it’s former living things. Which means that organic material was delivered via panspermia (life was seeded / transferred here from space). Which means that if you’re a secular heathen, you must equate panspermia with abiogenesis, but then of course, “abiogenesis could not possibly explain the organic layer on the Mercury ice [because t]he primordial soup would be far too cold.” Or something like that — I didn’t quite follow the train of thought.

The only possible explanation that makes sense, according to Terry Hurlbut, who is also a frequent contributor to Conservapedia, is the “Hydroplate Theory” (and I only use the term “theory” here because that’s what he’s called it).

To those fortunate enough to not be well versed in this, let me try to briefly explain it. The hydroplate … I’m sorry, I can’t say it, so I’ll just use “idea” … the hydroplate idea was originated by Walt Brown in an attempt to explain Noah’s Flood’s implications across the solar system. In other words, we see lots of stuff across the solar system, Noah’s flood is one of the most catastrophic things in the Judeo-Christian Bible, ergo maybe it can explain lots of seemingly catastrophic things across the solar system.

Brown’s idea is that, originally, around 6000 years ago, today’s terrestrial ocean was very deep underground, about 10 miles (15 km) or so. Then God had a hissy fit decided to kill almost everyone and everything about 4400 years ago, and after Noah got all those animals in his ark, God cracked Earth’s crust and the water burst out. It apparently, somehow, was under so much pressure, that not only did it cover Earth, but it threw enormous amounts of water, rock, and mud – 1% of Earth’s weight! – into space. Besides doing other things, that water, rock, and mud that was thrown into space are comets and asteroids that we see today. The comets being in all sorts of crazy orbits is evidence for this.

So, the organics obviously came from Earth.

And: “Brown confirmed today that the Mercury ice confirms his theory. That means the Mercury ice confirms creation, not abiogenesis or panspermia, as the origin of life.” QED

Seriously?

Yes.

No, Seriously?

Yes. These people really believe this. I feel like I need that disclaimer that South Park used in their Scientology episode: “THIS IS WHAT SCIENTOLOGISTS ACTUALLY BELIEVE.” Except in this case, “This is what some conservative, Biblical literalists actually believe.”

There are so many basic things wrong with this that it’s hard to know where to really start. I suppose I could just mention one and leave it at that, with full knowledge that Brown and his supporters have an open challenge to refute his idea and crow that no one ever has taken them up on it. No, I’m not interested in taking him up on it, either, if one of them happens to be reading this.

But moving on, one basic counter-argument against this is one of the arguments against a frequent Planet X: the asteroids today are, for the most part, dynamically stable in orbits that don’t intersect Earth. In other words, if you take Brown’s scenario, even if you have a now stable field of asteroids produced from this Flood event, either the aphelion or perihelion (farthest or closest) distance from the sun of the orbit would have to be Earth’s orbit, baring orbital interactions with other bodies.

Yes, there are a few thousand asteroids that cross Earth’s orbit, and some even do have orbital elements that I described. But millions of asteroids reside in the asteroid belt and do not come anywhere near Earth. And the asteroid belt shows families (groups) of asteroids that have dynamical lifetimes on the order of millions of years. They’re also all relatively in the same plane, but I guess Brown could say somehow that Earth shot them all out as a “belt” of material before shooting the would-be comets out in all directions.

To put it a third way: The vast majority of asteroids in the solar system, that Brown claims would have been produced in this event, have orbits that are not what they would need to be given his scenario, and in fact contradict it.

Final Thoughts

I’m somewhat sick (thanks Mom, Dad) and high on IBUprofen and Sudafed (the real stuff), so this post may have had a rather large “snark factor.”

And I’ll admit that sometimes Biblical literalists make some seemingly good arguments that are more difficult to tease apart, or subtle arguments that you have to think about for awhile, or very technical ones that require a specialist to get into.

But this is not one of them. This is grasping at straws. This is just, well, really “out there.” It’s about at the level of the lunar ziggurat, or a “psychic” claiming that they see the letter “P” but it could also be turned around to be a “b” or on its side to be a wheelbarrow and – oh look! someone used a shovel and a “P” can look like a shovel so I’m right!

Ice on Mercury was not an unexpected find confirmation because it was already discovered via radar from Earth about two decades ago. The detection from MESSENGER in orbit of Mercury is not insignificant, and it adds new constraints and new data to help refine models, but the “hydroplate ‘theory'” is not one of them.

November 16, 2012

Podcast Episode 55: Interview on Extraterrestrial Life with Dr. Brian Hynek


This nearly hour-long interview on a just-over one-hour episode is with the V-est of VIPs, my boss and former thesis advisor, Dr. Brian Hynek.

Brian is a professor in geological sciences at the University of Colorado, Boulder, where he studies Mars with a focus on understanding how and when Mars could have been habitable by life as we know it. This research program includes studying craters (me!), valley networks, other evidence for water, and traipsing around Earth for analogues for Mars, including studying extremophiles on active volcanoes.

The interview is mostly main-stream, covering a lot of the basics, but we get into some of the “PR Fails” of NASA, including the GFAJ-1 “arsenic” bacteria from two years ago and the ALH84001 Martian meteorite “nano-bacteria.” And, no discussion about Mars would be complete without a Hoagland name-drop once or twice.

Since this is an interview episode, and since it’s an hour long, only the Puzzler segment is present in addition to the main interview.

November 12, 2012

Falling through Earth

Filed under: general science,movies,physics — Stuart Robbins @ 8:18 pm
Tags: , , , , , ,

Just a quick post for today (busy busy here as usual, stuff should settle down a bit come December …). What would it be like to take an elevator trip through Earth from one side to the other?

Apparently, in the remake of the hilariously (poor science-)fiction movie Total Recall, the remake which I have not seen, there is a plot point of taking an elevator trip through Earth’s center from one side of the other. Apparently this is the only way to safely travel from one city to the other … I hope it’s not just some stupid thing that seems “cool” that serves no other purpose than to spend a budget on special effects.

Anyway, I came across a Wired article today where a physicist spends great detail explaining what would it actually be like to travel through Earth’s center. As with all great investigations when we have too much time on our hands, he even does numerical simulations, though it looks like he graphed in Excel … but I won’t hold it against him.

He shows several interesting things, including that the elevator would reach speeds no slower than 8 km/sec (around 5-6 miles/second). That’s really really fast. If he includes the higher density of Earth’s core, then you reach speeds up to 50% faster than that, even.

He also addresses the concept of weightlessness. This is something that all physics majors learn about in detail in Classical Mechanics classes (Physics I on steroids after your first and usually second year). But, I’ve always found it somewhat difficult to easily convey why, without drawing diagrams of circles and triangles, you would be weightless if you were stationary at Earth’s center. He goes through that in agonizing detail before letting you know that, actually, in the scenario in this version of Total Recall, you’d be weightless the whole time because you’re in free fall.

So, as I said, quick post for today, head over to Wired if you have a few minutes to reach about the physics of taking an elevator trip through the Center of the Earth.

November 1, 2012

Podcast Episode 54: The Fake Story of Planet X, Part 5 (IRAS Discovery in 1983)


The year was 1983, and just five months before a plucky young astro/geophysicist was born, NASA launched the InfraRed Astronomical Satellite (IRAS). Over the next 10 months, the satellite observed nearly the entire sky in wavelengths of light never before measured for astronomy, and it found over a quarter-million objects. Late in 1983, an announcement was made about a potential discovery of a planet on the outskirts of our solar system, but this was quickly covered up.

Was this the real and true discovery of Planet X? Is NASA trying to hide this, even though the news reports from the time still exist and all the IRAS data are publicly available?

Listen in to this ~27-minute episode to find out!

This episode also saw the return of New News, Q&A, Feedback, a Puzzler, and it even had an Announcement or two!

The next episode will be my interview with Dr. Brian Hynek who will be discussing astrobiology, how we search for life, and why Mars is supposedly so important. If you happen to read this before November 3, feel free to use the Comments section to suggest potential questions you’re interested in that I can ask him.

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