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

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe. Clyde Tombaugh didn't set out to discover Pluto when he sent his ...

The ringed gas giant Saturn has officially replaced Jupiter as the planet in our solar system with the most moons. The ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not ... for a single human lifetime, the solar system's smallest planet. Pluto was discovered in 1930 by Clyde Tombaugh ...

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto turns out to have as much complexity as Mars or Earth, so much so that I ...

Pluto is just 1,400 miles wide, about half the width of the U.S. "It definitely kind of broke the mold," van Belle said. "In our inner solar system, we have the four terrestrial rocky planets ...

Pluto, discovered in 1930, was once considered the ninth planet in our solar system. In 2006, the International Astronomical Union reclassified Pluto as a dwarf planet because it doesn't meet all ...

NASA's New Horizons spacecraft conducted the first and only flyby of the Pluto system ... celestial leftovers from the formation of our solar system. For New Horizons, the gathering of more ...

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 ...

Discovered in 1930 at Lowell Observatory in Flagstaff, Arizona, Pluto was hailed as the ninth planet in our solar system. For decades, it captivated imaginations with its icy surface and distant ...

Pluto was discovered 95 years ago on Feb. 18, and even though it was demoted nearly two decades ago, it remains a fascinating part of our solar system. "Pluto is a complex and mysterious world ...