Prepare yourself—the Pluto debate has returned and people are not going to be able to shut up about it. They’re going to have a lot of opinions and they’re going to need to share them ...

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

Pluto's status has been a heated debate for decades with arguing over a dwarf planet classification. Here's what international standards say in 2023.

Pluto was demoted from a planet to a dwarf planet in 2006. So why is its status still so controversial today? ... It must have enough mass to draw itself into a round shape.

Pluto was once considered the ninth planet in the solar system, it was demoted in 2006 to dwarf planet status. We explore this icy body in more detail here.

Since the International Astronomical Union changed its definition in 2006, Pluto is no longer a planet. Here's why. 💰Our editors’ picks for the best Prime Day deals.💰 ...

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.

Pluto was demoted to a newly createdcategory, "dwarf planet," in 2006, partly because of the discovery ayear earlier of Eris, another icy body from Pluto's neighborhood.

Metzger said the only planet more complex than Pluto is Earth. And we’ve learned so much more about Pluto after NASA’s New Horizons spacecraft flew past it in 2015.

It has now been 15 years since ex-planet Pluto was re-classified as a dwarf planet by the International Astronomical Union (IAU). On August 24, 2006, the IAU convened at its 26th general assembly ...

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.

Did Pluto ever actually stop being a planet? Experts debate. It’s been 18 years since Pluto’s celestial status was called into question—yet the matter seems far from settled.