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

When a six-mile-wide asteroid slammed into Earth 66 million years ago, it didn’t just wipe out the dinosaurs. New findings ...

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

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.