Right now, the team is studying the most iconic feature on Pluto - the heart-shaped region informally called "Tombaugh Regio" shown in the lower right portion of Pluto in this high-resolution ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

Tombaugh, of course, is the Kansan who discovered Pluto in 1930. He died in 1997, but the scientific dispute about Pluto’s status – whether it deserves to be labeled a “planet” – is ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A huge heart-shaped ...

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

A stronomer Percival Lowell founded his Arizona stargazing lab in 1894 to aid in his search for life on Mars. While that ...

This place just made TIME's list of World's Greatest Places of 2025 and Newsweek's 10 best science museums in the U.S. Here's ...

Despite the change, Pluto remains a beloved celestial body, and some astronomers still debate whether it should regain its planetary status. Yes. Clyde Tombaugh discovered Pluto on Feb. 18 ...

The observatory is known for its historical significance, including the discovery of Pluto in 1930 by researcher Clyde Tombaugh. TIME highlighted Lowell's new Marley Foundation Astronomy Discovery ...