Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Astronomers have found a distant celestial body — ...

NASA’s New Horizons spacecraft recently came out of hibernation to continue its journey through an unexplored part of the ...

NASA Administrator Jared Isaacman wants to put an end to a decades-long debate among scientists. Is Pluto a planet or not? Isaacman says it should be — but it hasn't been one for 20 years. That's ...

The rare encounter revealed a distant world with giant ice sheets, mountains, valleys, and terrains unlike any other seen in ...

Once the quirky underdog of our solar system, Pluto held planetary status until 2006, when it got a cosmic demotion that still stings space fans. Discovered in 1930, Pluto was the ninth planet for ...

Evidence for landslides down steep crater walls on Pluto have been found in imagery from NASA's New Horizons mission.

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might ...

There could be a ninth planet in our solar system that's lying in wait to be discovered - and no, it's not Pluto. Our solar system has eight planets but in recent years, astronomers have theorised ...

Learn how landslides detected on Pluto for the first time reveal the active geologic processes that shape the dwarf planet's surface. Landslides cause a lot of chaos on Earth, as rocks and other ...

Isaacman says it should be — but it hasn't been one for 20 years. That's because of a decision from the International Astronomical Union, which said it met the definition of a dwarf planet due to the ...

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists —... Pluto isn't a planet — but it gives us clues for how the ...