The celestial body’s status as the solar system's ninth planet was withdrawn in 2006. Now some experts say we might want to ...

Pluto was reclassified as a dwarf planet in 2006, but new discoveries and fresh debate are reigniting calls to restore its ...

Easy: Venus is the weirdest planet in the solar system. The most distant major planet from the sun and the last stop before ...

A newly-discovered planet named Enaiposha, GJ 1214 b, is unlike anything found in our own solar system, similar to a ...

The head of NASA says maybe Pluto is a planet after all. He is wrong because Pluto is part of the rest of the solar system ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder of ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's impression shows the "inside out" planetary system around the star LHS 1903. - ESA An exoplanetary system about 116 ...

When you see art of our solar system as the planet orbit the sun, you may notice that Earth's orbit has a tilt. It is not a perfect circle. What's more, Earth is not the only planet that displays such ...

The discovery provides a precious peek into the dawn of our own solar system as well The discovery provides a precious peek into the dawn of our own solar system as well The discovery provides a ...

Astronomers discover that the rotation speeds of distant planets reveal how they form and evolve in the universe ...

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 ...