The first humans to land on the Moon, and the team that got them there, get all the glory. But what about the people who laid the foundation for this effort by mapping the Moon? Who were they?
Geminid meteors shower downward on a December night in a remote part of Virginia.
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Every day about 50 tons of rocks from space fall on Earth. An examination of these meteorites has inspired a new theory about how exactly these rocks formed.
Planetary scientists believe that Earth was formed by the conglomeration of meteorites and comets – which also brought water.
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The source of water on Earth, the Moon and planets in our solar system is hotly debated. Some in the planetary science community argued that it came from asteroids and comets. Now they have proof.