Rocks found on Earth may have originated from Mercury: a potential breakthrough for astronomers.

What processes during the formation of Pluto's largest moon, Charon, potentially led to it having cryovolcanism, and even an ...

U.S. Senators Mark Kelly (D-AZ) and John Cornyn (R-TX) introduced a bipartisan resolution recognizing June 30 as National ...

Astronomers celebrated the release of the first images from the Rubin Observatory — and registered hundreds of its first ...

NASA has revealed that they have sent a man-made machine further than they ever have before, and they said they made an odd ...

How long does it take Pluto to orbit the sun? Learn more about how this planet makes one lap around our Solar System.

Billions of years ago, in the frozen edges of the solar system, a violent impact shaped one of space’s oddest pairs. Instead of a typical planet-moon setup, Pluto and Charon became a binary system.

Pluto and Charon’s unique characteristics make them the largest binary system in the trans-Neptunian region. Their shared orbital axis and comparable sizes—with Pluto’s diameter about 1,200 ...

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 ...

New Horizons discovered that Pluto is home to the largest glacier in the solar system, one measuring more than 386,000 square miles, or larger than Texas and Oklahoma combined.

Clyde Tombaugh discovered Pluto on Feb. 18, 1930, at Lowell Observatory in Flagstaff. Percival Lowell, the observatory’s founder, had predicted the existence of a ninth planet, ...

Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff. Cold, dark and distant, it was named after the Roman god of the underworld.