The Apophis asteroid, once feared to hit Earth, is less than three years from making an unprecedented approach toward Earth. Here's what to know.

What if the biggest asteroid hit Earth? This video explores the potential consequences of a massive asteroid impact, including its effects on the planet's environment, climate, and life forms. It ...

Space is big. Disturbingly big. And most of the time, it goes about its business without us paying much attention. But every ...