When the International Astronomical Union (IAU) demoted Pluto from a planet to a dwarf planet in 2006, it surprised a lot of people, including some scientists. Even many years later, some astronomers ...

Astronomers are investigating a potential hidden planet, dubbed Planet Y, far beyond Neptune. Its gravitational pull is ...

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe. When you purchase through links on our site, we may earn an affiliate ...

Pluto may not be a planet any more, but that doesn't mean the ninth rock from the sun is any less significant in its place in our solar system. "Pluto is still an important part of our solar system," ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (Jan. 20, 2016) — You might have a ...

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.

The solar system may have a ninth planet after all. This one is 5,000 times bigger than outcast Pluto and billions of miles farther away, say scientists who presented "good evidence" for a ...

Pluto, the king of the underworld, was the ancient Romans' embodiment of death itself. Known as Hades in Greek mythology, ...

Pluto direct in Aquarius is a call to push forward and break free from relationships and roles that have kept you ...

Pluto, our planet of profound change and ultimate reckoning, is going direct in Aquarius, and the energy of the dwarf daddy ...

Every planet takes its turn going retrograde, and since Sunday, May 4, Pluto, the planet of transformation, has moved ...