Astronomers have recently detected a rogue planet entering our solar system, marking a rare event that has sparked ...

Each year, researchers make new observations and revisit old data that redefines what we know about how Earth, the solar system, galaxy, heck—the whole universe—came to be.

For astrobiologists, the search for life beyond our solar system could be likened to where one would look in a vast ...

We know a lot about our Milky Way Galaxy’s location in the universe thanks to efforts to map the distances to nearby galaxies. Our galaxy is a member of the Local Group — a small collection of ...

Planets beyond our solar system called "super-Earths" are common in the universe. Astronomers want to know if these worlds are habitable, and if any of them are like Earth.

The comet, originating from beyond our solar system, continues to draw attention from astronomers worldwide as multiple Nasa ...

Back in the earliest days of the Solar System, a day on Earth was only 6-to-8 hours, meaning we had over 1,000 days per year. But our rotation rate is just the start of what changes in a year.