What was discovered in Flagstaff, Arizona, and killed off in Prague? If you answered "Pluto's planethood," your grasp of the astronomical is excellent. Feb. 18 marks the 95th anniversary of the ...

Even early humans quickly recognized the difference between the stars and the planets, with the objects now known as planets appearing to travel across the night sky over the course of the year, or ...

MOUNTAIN VIEW, Calif. -- NASA just received a signal back from New Horizons, confirming a successful first flyby of Pluto. Euphoria broke out at NASA as Pluto is now the most distant object reached by ...

A new formation theory for Pluto's moon Charon could explain why Pluto is geologically active. Illustration incorporates NASA New Horizons terrain imagery. Pluto — demoted to dwarf planets status in ...

NASA explains Pluto's newly discovered "blue sky" and whether or not potential astronauts could ever witness an Earth-like sunrise. The New Horizons space probe sent back its first color images of ...

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 ...

The James Webb Space Telescope (JWST), operated by NASA, has uncovered intriguing new details about Charon—Pluto’s largest moon—including the presence of previously undetected surface chemicals. This ...

If you've ever wondered what it'd be like to land on a distant world, you have to watch this video of the New Horizons spacecraft's approach to Pluto. NASA released the captivating video, starting off ...

The debate over Pluto’s planetary status has been ongoing since its reclassification as a “dwarf planet” in 2006 by the International Astronomical Union (IAU). Recent discussions and new scientific ...