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WASHINGTON—Spurned Pluto is changing its looks, donning more rouge in its complexion and altering its iceball surface here and there. Color astronomers surprised. Newly released Hubble Space Telescope ...

When NASA launched the New Horizons spacecraft in January of 2006, Pluto was still a planet. By August of that year, it had been demoted to dwarf status. But despite the haters who tried to knock it ...

When viewed in enhanced color, the icy, outer world of Pluto looks very different from its more uniform, subdued hues. The hilly plains in Pluto's heart-shaped area are mostly uniform, as a flat ...

Pluto is over 3 billion miles away from Earth, smaller than the moon, has an average surface temperature over 200 degrees below freezing (in Celsius!), and isn’t even really a "planet" anymore, ...

Today, NASA released the highest resolution photos yet of Pluto taken by the New Horizons spacecraft on July 14th, when the probe made its closest approach to the dwarf planet. The photos were ...

We’re still hours away from receiving confirmation that New Horizons lived through its flyby of Pluto, but that doesn’t mean the team behind the spacecraft is twiddling their thumbs. This afternoon ...

The growling list of mysteries surrounding Pluto just got longer. On Oct. 8, NASA released the first color photo of Pluto's atmosphere, and the shade they saw was anything but expected: "Who would ...

The first color movies from NASA’s New Horizons mission show Pluto and its largest moon, Charon, and the complex orbital dance of the two bodies, known as a double planet. “It’s exciting to see Pluto ...

Pluto and its largest moon Charon orbit their mutual center of gravity (marked with 'x') in this still from the first color animation of Pluto from NASA's New Horizons spacecraft captured between May ...

New Horizons has obtained impressive new images of Pluto and its large moon Charon that highlight their compositional diversity. These are not actual color images of Pluto and Charonthey are shown ...