Asteroids that orbit close to the Earth inevitably cause us some anxiety due to the even remote possibility of a collision.

It's so clean you can see the reflection of my lighting in the glass, and that's the first time I've seen that. No streaking ...

NASA's Perseverance rover has been busy gathering bits of Mars — rock cores the size of chalk sticks, clusters of broken fragments no bigger than pencil erasers, and even grains of dust fine enough to ...

In an extraordinary breakthrough, scientists have discovered a massive underwater crater buried beneath the waters of the ...