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

Pluto was identified in 1930, but by 1994, it was still little more than a blurry pixelated smudge on astronomers’ screens. Today, we marvel at its icy plains, towering mountains, and stunningly ...

In July, NASA's New Horizons spacecraft took us to Pluto for the first time. The photos the craft sent back so far have astounded researchers. New Horizons principal investigator Alan Stern says ...

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) What was discovered in Flagstaff, Arizona, and killed off in Prague?

Scientists claim to have solved the mystery behind the heart shape on Pluto's surface, believing it was formed by the planet being hit by an object over 400 miles in diameter. This enormous region ...

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 ...

Images and data have been flowing in since NASA's epic New Horizons Pluto flyby on Tuesday morning, and the latest image released shows an exaggerated color map of Pluto and its moon Charon.

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or ...

Pluto was discovered at Lowell Observatory in Flagstaff, Arizona in 1930 and was considered our ninth planet until 2006. The International Astronomical Union reclassified Pluto as a dwarf planet ...

Pluto was the little planet that could — until it couldn’t. Discovered in 1930 at Lowell Observatory in Flagstaff, Arizona, Pluto was hailed as the ninth planet in our solar system. For ...