Basically, it's like looking at our great-great-grandparents. |
It's like looking at our great, great grandparents. Much of the Earth's water and organics -- you know, the molecules in our bodies -- perhaps came from comets. So these samples will tell us ... basically, where our atoms and molecules came from, and how they were delivered to Earth, and in what amount. |
There's a kind of temperature zoning in the solar system. |