How much contamination is OK on Mars 2020 rover?

When the Mars 2020 rover arrives on the Red Planet, one of its primary mission goals will be to select and preserve samples that would eventually make it back to Earth for scientific study. Rather than seeking to eliminate ...

Field Museum acquires important Martian meteorite

The Field Museum has acquired six pieces of an extremely important Martian meteorite that was hurled into space about 700,000 years ago when Mars collided with an asteroid.

3 questions: Ben Weiss discusses what a wet moon might mean

Last week, NASA and other agencies announced results from instruments aboard three different spacecraft which all indicate that there is water present in the surface soil, or regolith, of the moon. Although the amount is ...