The asteroid will be visible for several nights from different parts of the world. We’ll tell you when and where to look, and what equipment you’ll need to spot it.

An asteroid estimated to be 1.2 miles wide will fly by Earth early Wednesday morning, but it’s not expected to collide with our planet. The asteroid is called 52768 (1998 OR2), and it was first ...

When we think of planet killer asteroids, survival odds might seem slim. But we aren't defenseless.

600kg of antimatter, over 100 quintillion joules of energy, and a reaction that starts high in the atmosphere. As the meteor descends, it continuously annihilates matter, releasing more and more ...