There's a broad consensus in the scientific community that a follow-up mission to Pluto should be an orbiter, and not a ...

Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

Is Pluto a planet? Where the debate stands and why some believe it should be. Why is Pluto not a planet? Here's what changed to make it a dwarf planet. Just Curious. More Videos.

On July 14, 2015, a spacecraft flew by Pluto for the first time! NASA's New Horizons spacecraft spent 9.5 years making the ...

The year was 2015. After traveling billions and billions of miles through the Erebus, New Horizons encounters the boatman, and the somber lord of the departed. The spacecraft could have been ...

Why is Pluto not a planet? Here's what changed to make it a dwarf planet. Just Curious. More Videos. LGBTQ+ pride under pressure: Fighting back, then and now.

In 2006, NASA sent a a probe to Pluto, hoping to examine it and the Kuiper belt, an area beyond pluto with several dwarf planets and asteroids. This project is called new Horizons.

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.

Meanwhile, many astronomers admit that while they still call Pluto a planet, they do so only because of historical precedent: It's been part of the world's consciousness for more than 70 years.

Planet X or not, Pluto existed. Smaller than the Moon, but inhabiting the realm of the giant planets, it defied our notions regarding the architecture of the Solar System.

On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, whether you call it a planet or not.