vineri, 25 septembrie 2009
Did comet crashes help spark Earth life?
Like shooting comets in a barrel
To simulate a comet hitting pay dirt, Blank and her colleagues fire a bullet into a metal container the size of a can of beans. In this scenario, the container is the comet and the bullet is the hard ground. Inside the container is a small chamber about as big as a quarter, in which the scientists place a liquid sample of organic molecules. Full story:
* Ingredient for life detected in comet dust: