On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo ...

Scientists found a mysterious rogue planet roaming aimlessly outside our solar system. What if it came closer?

Jupiter is the largest planet in the solar system, known for its massive size, strong gravity, powerful storms and many moons ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

New images from NASA 's Hubble Space Telescope have revealed an enormous, oddly shaped disk of gas and dust around a single ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to ...

The sun’s outer atmosphere resembles a pufferfish.

Astronomers discovered a new moon of Uranus and hundreds of moons around Saturn over the past year, and there may be many ...

The year 2026 is officially here and is all set to a spectacular one for stargazers. This guide will break down the planetary ...