NASA has defined asteroids as small, rocky objects that orbit the sun like planets, but they are much smaller in size. Most ...

NASA has just premiered Planetary Defenders, offering a fascinating look at the high-stakes work geared toward protecting Earth from any large asteroids discovered coming our way.

Usually, what springs to mind when you think of the world’s most expensive substances are gold, silver, and platinum. However ...

A planetary scientist explains new research explaining the differing compositions between space rocks that hit Earth and are brought back.