The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

From the scorching surface of Mercury to the icy edges of Neptune, our planetary neighborhood is full of wonders. The order ...

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...

Learn how scientists used ancient raindrops preserved in meteorites to accurately date Jupiter’s creation for the first time.

The Sun, the planets, and all else that constitutes the solar system are hurtling toward the star Lambda Herculis, some 370 light-years away.

From planets that rain diamonds to moons with hidden oceans, the Solar System holds more mysteries than most realize. These ...

A planet parade featuring all seven of the other planets in the solar system will peak tonight, just over a month since the last one. If you missed January’s spectacle, make sure you tune in to ...

And tantalizingly, what they found suggests that our solar system may already be flooded with visitors from the star system, which is about 4.25 light years away.

These are smaller—all 50 meters or less in diameter—and have circular orbits that stick within the inner solar system. An object called 1998 KY26, which may be just 10 meters across, is an ...