Voyager 1 has been exploring the cosmos for decades, but when it reached the edge of the solar system, it found something very strange and very hot.

Astronomers are investigating a potential hidden planet, dubbed Planet Y, far beyond Neptune. Its gravitational pull is ...

As scientists get closer to putting humans on Mars, the need to understand why clocks tick faster on the red planet is more ...

What makes 3I/ATLAS especially intriguing is that the comet might be three billion years older than our entire Solar System.