LCROSS Lunar Impact |
LCROSS Lunar Impact |
Oct 9 2009, 02:19 AM
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
T minus 9 hrs. 10 min till impact. NASA TV coverage begins @ 1015 GMT (0315 PDT). Link to coverage here.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Oct 11 2009, 06:44 AM
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#2
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Member Group: Members Posts: 258 Joined: 22-December 06 Member No.: 1503 |
I just thought of something. Some say that there wasn't much ejecta because maybe LCROSS hit something very hard like a boulder. Well, the hydrogen signature is definitely there in that crater. Most believe it is water ice...perhaps only 1% of H2O in the soil. That's an assumption, right? What if the concentration is a lot greater than that?
Water ice in space is much different than here on Earth. It cannot form crystals in a vacuum. We call this form 'amorphous ice'. It is very much like hard glass only far colder. Imagine LCROSS hitting a block of hard glass that is 50 or more meters thick. It might as well as hit a solidified lava flow. Am I right? I'm sure there would have been some damage to the block. But the forces involved in the impact would have been directed differently than expected. Wouldn't there be a lot less ejecta going upward in such a case? Wouldn't most of the forces be directed more horizontally and the ejecta would be less likely to get above the rim? I'm not an expert on impact dynamics, so help me out on this one. |
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