Comparable in size to the country of Mexico and dominating one of Pluto’s hemispheres, Sputnik Planitia is likely the result of an impact — but few impact craters come in Sputnik Planitia's ...

scientists say that Pluto is likely to have water ice, geysers, and volcanoes. The ice mountains are 11,000 feet high, and the planet's surface does not have a single impact crater, indicating ...

The level of detail was staggering: individual craters, ridges, and valleys were visible for the first time. The spacecraft also captured breathtaking images of Pluto’s hazy atmosphere.

“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 a complex and mysterious world with mountains, valleys, plains, craters, and glaciers. It is located in the distant Kuiper Belt," the National Aeronautics and Space Administration said.

(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?

Pluto and its moon's mountains and craters are being named after sci-fi heroesPluto and its moon's mountains and craters are being named after sci-fi heroes ...

Images from New Horizons revealed another unexpected feature: an area of the planet featuring a range of mountains rising to 3,500 metres from the surface, surrounded by smooth terrain with few signs ...