The ringed gas giant Saturn has officially replaced Jupiter as the planet in our solar system with the most moons. The ...

Sailor Moon's original '90s anime adaptation may be beloved, but it also introduced plot holes that still confuse fans today.

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto turns out to have as much complexity as Mars or Earth, so much so that I ...

Astrology's first house highlights identity and self-expression with each planet bringing unique traits. Sun adds charisma while Moon emphasizes emoti ...

Pluto was always in a tough spot when it came to being a planet. Just 1,477 miles across, it's only one-fifth the diameter of Earth. It did have five known moons: Charon, Nix, Hydra, Kerberos and ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary ...

and Neptune. Explore the planets with NASA There are five officially recognized dwarf planets in our solar system: Ceres, Pluto, Haumea, Makemake, and Eris, according to NASA. What happened to Pluto?

While searching for Pluto, Tombaugh also identified several asteroids, moons, and other celestial ... a distant zone of icy bodies beyond Neptune. Should they be considered planets?

For decades, it captivated imaginations with its icy surface and distant orbit beyond Neptune. But in 2006 ... When to see the full Blood Moon in AZ Pluto is Arizona's official state planet ...