Read about the companies selected by NASA to advance knowledge supporting life and work in the lunar environment.

For a few months, Earth had a second moon — a tiny asteroid that may have been a piece of our own Moon ...

While claims of a “rare alignment” are overblown, you can still see up to six planets in the night sky this weekend. Here's how.

The Blue Ghost lunar mission has captured a gorgeous image of Earth as it ramps up its journey toward the moon.The Latest ...