The Earth has gone through many major events over the course of hundreds of millions of years. Some of the most significant ...

Although it won’t hit Earth, an asteroid once labeled a “city killer” is now back in the spotlight — this time, because it ...

Scientists warn the universe could reverse its expansion and collapse in a “Big Crunch” — with the first signs possibly emerging in just 10 billion years.

A comet that was born in another solar system and could be billions of years old is hurdling through Earth’s solar system — a ...