Many people hold Pluto close in their hearts and refuse to abandon the assertion that it is a planet, although science ...

The major planet roster has changed over the years, but Pluto is still beloved by the science community and regularly makes headlines. In July 2022, the National Aeronautics and Space ...

If you answered "Pluto's planethood," your grasp of the astronomical is excellent. Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about ...

Discovered in 1930, Pluto was the ninth planet for over 75 years, orbiting at the chilly fringes of our solar neighborhood. But then scientists at the International Astronomical Union decided ...

Arizona Gov. Katie Hobbs signed a bill making Pluto the official state planet. It was discovered at an observatory in Arizona, but was downgraded to a dwarf planet in 2006. Arizona Governor Katie ...

What Pluto can teach us about planets and our solar system : Short Wave Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size ...

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 ...

Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute When the International Astronomical Union (IAU) demoted Pluto from a planet to a dwarf planet in 2006 ...