We all know that asteroids are out there, that some of them come dangerously close to Earth, and that they've struck Earth before with catastrophic consequences. The recent discovery of asteroid ...

and will pass within 4.6 million miles at its closest approach (more specifically, within 1.37 million miles). According to NASA’s JPL tracking, 2020 XR will cross through Earth’s orbit ...

A green comet shooting through the morning skies is scheduled to make its closest approach to Earth at the beginning of next month. Comet C/2022 E3 (ZTF) was first spotted in March of last year ...

The closest of the asteroids to us—estimated to be about the size of a car—is whizzing through space at 27,358 miles per hour.