Scientists who argue for Pluto to be classified as a planet are getting more ammo for a debate that has raged over the last 15 years. A team of researchers published a study in the scientific journal ...

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) What was discovered in Flagstaff, Arizona, and killed off in Prague? If ...

After 12 years as an outcast, it looks like Pluto may actually be a planet after all. In a paper published in the journal "Icarus"-- a planetary scientist claims Pluto should have never lost its ...

A study from a team of noted astronomers soon to be published in the journal Icarus lays out the argument for readmitting Pluto. However, it'll bring a lot of friends. Share on Facebook (opens in a ...

With Pluto in Aquarius, the focus will be on democracy, technology, and social reform. Expect whistleblowers, reckonings, ...

The planet Neptune wobbled in its orbit around the Sun. That could only mean one thing, astronomers said: There was a ninth planet out there, somewhere, lurking in the fringes of the solar system.