Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...

The discovery was made by astronomers using the Subaru Telescope, which is situated atop a dormant volcano in Hawaii.

The post Scientists Might Just Have Discovered Another Dwarf Planet Sibling For Pluto first on TwistedSifter. In 2006, Ceres – located in our solar system’s main asteroid belt – was officially ...

Pluto's discovery was widely celebrated, especially in the U.S. After all, it was the first planet discovered in the new world, and America needed the win in 1930.

Yet, something was odd about Pluto. While Planet X was estimated to be about six times more massive than Earth, Pluto’s mass is only 20% that of the Moon, itself 1% of the Earth’s mass.

In 2006, the IAU famously dropped Pluto from the pantheon of planets because it did not meet the union’s criteria. As stated on the union’s website, a planet in the solar system: ...

Pluto may have lost its status as a full-fledged planet in 2006, but that doesn't mean it's a joke of a world this April Fools' Day and the folks behind Pluto TV want to make that clear.

Because Pluto is so dim, you need a telescope to see it. “A backyard telescope could do it under the right conditions,” says ...

Pluto soon became America’s favorite planet, especially after Walt Disney named one of his characters, a charismatic dog, after the newly found planet. Plutomania caught the country – and the ...

Rep. Justin Wilmeth is advocating for the Pluto to become Arizona's state planet. The bill is now in Gov. Katie Hobbs' hands. Here's what to know.