Astronomers using the Subaru Telescope have discovered a strange new body in a weird orbit at the edge of the solar system, ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system. advertisement.

There's more to the solar system beyond Pluto's orbit. Researchers have discovered a new dwarf planet nearly 7.5 billion miles away from the sun. Even more intriguing, the discovery suggests the ...

Since it’s so far from the sun an average of about 3.7 billion miles, the farthest planet in the solar system and because it’s the smallest, scientists thought Pluto’s gravity would not be ...

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why Pluto isn't a planet.

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists — including hints about how the solar system formed.