Posted on 03/06/2009 4:12:22 PM PST by GodGunsGuts
South Park joke..
You have given new meaning to the term Cracker-head. Are you forming a cracker-head club.
No, the spaghetti monster transcends our definition of life with his tomato saucy goodness. The spaghetti monster is the only being man is incapable of truly understanding...
It's an unbecoming trait.
“Weren’t Martian rocks found in Antarctica?”
Why a Mars Rock Hits Earth Every Month
By Robert Roy Britt, Senior Science Writer
November 7, 2002
Every month, on average, a rock from Mars lands on Earth. Most are never found, but those that have been picked up suggest that the theory for how they get here having been booted from the Red Planet by very large asteroid impacts is not fully accurate.
Now a new computer simulation appears to solve the puzzle by showing that relatively small collisions can do the trick.
Scientists know that space rocks ranging from the size of a car to that of a city have hit Mars many times throughout history. In some of these collisions, chunks of Mars are flung into space and never return. Some go on journeys that can last millions of years before being captured by our own planets gravity.
Meteorite hunters have found about 26 rocks on Earth that have been identified as having come from Mars (some of these broke apart upon entering the atmosphere, so the 26 rocks were found as about 40 separate pieces).
Scientists had thought it took a serious wallop to instigate these interplanetary exchanges. Yet the new research finds that craters as small as 1.9 miles (3 kilometers) wide on Mars could have been the starting points for rocky odysseys.
This minimum crater diameter is at least four times smaller than previous estimates, the scientists write in an account published today in the online version of the journal Science.
The study was done by James Head and Jay Melosh of the University of Arizona, with Boris Ivanov of the Russian Academy of Sciences.
The scientists said terrain covered by weaker material, which might be created in previous impacts, requires larger events to scoot stuff all the way to Earth. That means, they say, that Martian meteorites found on Earth should tend be from a young Mars, a projection that fits with the dating done on actual rocks that have been collected.
In an interview with SPACE.com, Head, who also works for Raytheon Missile Systems, explained what the new simulation reveals.
An asteroid one-and-a-half times the size of a football field slams into Mars at 22,370 mph (10 kilometers per second). The energy of the impact is equal to about 60 megatons of TNT, comparable to the largest nuclear devices ever tested.
A strong shock wave begins to form. The leading edge of the shock wave reflects off the surface from below and interferes destructively with the rest of the incoming shock wave, canceling out the high pressure near the surface. At the surface, the pressure is zero, according to the simulation. Just below the surface, however, the pressure is great.
“The pressure difference accelerates the material to high speed,” Head said. “About 10 million fragments averaging 5 centimeters across [2 inches] are accelerated to speeds in excess of 5 kilometers per second [11,180 miles per hour].”
That is the escape velocity of Mars, the speed needed to leave the planet without going into orbit around it.
“According to the celestial mechanics people, about 7.5 percent of this material is destined to land on the Earth,” Head says. “More than half of that lands in the first 10 million years after the impact.”
Impacts of this size and larger occur every 200,000 years or so on Mars. About once every 2 million years, an impact of this size occurs on terrain suited to the scenario Head and his colleagues lay out. This means fragments from several impacts are in transit all the time.
“This works out to about one Martian meteorite landing on Earth each month,” Head said.
These are not the only space rocks that hit Earth, Head points out. While only a few dozen Mars meteorites have been discovered, the total number of space rocks collected on our planet is about 20,000.
http://www.space.com/scienceastronomy/solarsystem/mars_knocks_021107.html
Answers to how they know these meteorites (found on Earth) came from Mars:
http://search.yahoo.com/search?p=%22mars+meteorite%22+earth&ei=UTF-8&fr=moz2
Another evolutionist who thinks life must have accidently started somewhere else instead of earth, somewhere far away, where the rules don't apply or the rules are different sometimes, but always by accident.
==My friend, I know exactly why you posted this. You like to poke sticks at people who disagree with you. It’s an unbecoming trait.
Now I know you’re not an IDer.
Wow, you really are an arrogant ass.
Thank you. Someone else, who claims to be an IDer (of all things), thinks my post drawing attention to this Evo-craziness is “unbecoming.” LOL
Takes one to know one d:op
I don't know what a d:op is but I'll wear the label proudly. You are a hoot!
That’s a cool idea...I’m an astrobiologist. Didn’t George Castanza always want to be a Marine Biologist?
Keep the pressure on these guys, GGG. I’ve always wondered why they care about origins, if their presuppositions begin with excluding the possibility of thoughtful intent. And, if there is no intent to this whole thing, then they are meaningless self-recognizing protoplasms with no significance or value.
It’s all in good fun, Jean S.
PS That was me, with my hat sideways, sticking my tongue out at you. Ha, ha, haha, ha...d:op
If I recall, Velikovsky surmised that the asteroid belt contains the remains of a busted planet.
Or maybe that was Zechariah Sitkin.
Anyway, they are very entertaining writers full of wonderful thought experiments and scenarios, but last I heard there was no evidence whatsoever that the asteroids were ever parts of a large planet; and there is some evidence that they were NOT.
And if they were not, the odds on Ceres having sprouted life are mighty low.
...and even their so-called “self-recognition” is nothing but the product of arbitrary chemical reactions flashing on the gray screen of their “mind.”
He figures wrong!
The article didn't say that or imply that. They are speculating that life could possibly have been brought to earth from an asteroid or possibly a comet....Which after all, is a possibility. If you have proof establishing that is not possible, I'd like to hear or see that proof or evidence.
In other words, the diameter of Ceres is about the distance between London and Marseilles, or roughly one end of France to the other. Not Spain France and Germany put together, unless you’re measuring them by their youthful waistlines. ;)
Try putting “40x more” than all the earth’s water on a rock the size of France.
It's above my pay grade.
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