Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

Skygazers, mark your calendars because one of the coolest celestial events is coming around again toward the end of February.

Spectacular clouds swirl across the surface of Jupiter. These clouds contain water, just like Earth's, but are much denser on ...

Astronomers have now confirmed over 6,000 exoplanets orbiting distant stars, marking a significant milestone in humanity’s quest to understand planetary systems beyond our own. According to Space.com, ...

A rare triple conjunction of Venus, Mars and Mercury is happening on the opposite side of the solar system to where Earth is, ...

Add Yahoo as a preferred source to see more of our stories on Google. Digital art of distant planet - Dottedhippo/Getty Images On August 24, 2006, our solar system lost a planet. It wasn't by ...

We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp. One of ...

You’ve set your telescope up and are showing people some of the wonders in the sky. Of course, they’re going to ask you questions. Here are some you might be asked. How many do you know the answers to ...

Polygon has rounded up the best icy sci-fi planets from our favorite video games, movies, television, and books ...