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

Much of what scientists know about the early solar system comes from meteorites—ancient rocks that travel through space and ...

So, the OSIRIS‑REx mission ventured to the asteroid Bennu to retrieve an unaltered sample. Retrieving this sample allowed scientists to examine the asteroid’s composition in detail.

As you watch the night sky, streaks of light often flash for a moment, then disappear. These brilliant flashes—called ...

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.