New evidence our neighborhood in space is stuffed with hydrogen

Only the two Voyager spacecraft have ever been there, and it took than more than 30 years of supersonic travel. It lies well past the orbit of Pluto, through the rocky Kuiper belt, and on for four times that distance. This ...

Pluto's hydrocarbon haze keeps dwarf planet colder than expected

The gas composition of a planet's atmosphere generally determines how much heat gets trapped in the atmosphere. For the dwarf planet Pluto, however, the predicted temperature based on the composition of its atmosphere was ...

Pluto 'paints' its largest moon Charon red

In June 2015, when the cameras on NASA's approaching New Horizons spacecraft first spotted the large reddish polar region on Pluto's largest moon, Charon, mission scientists knew two things: they'd never seen anything like ...

New Horizons returns first of the best images of Pluto

NASA's New Horizons spacecraft has sent back the first in a series of the sharpest views of Pluto it obtained during its July flyby – and the best close-ups of Pluto that humans may see for decades.

New Horizons mission exceeds expectations

(Phys.org)—NASA's New Horizons mission, as the name suggests, is all about broadening our scientific horizons. The spacecraft, visiting the unexplored world of dwarf planet Pluto and its moons, continues to deliver more ...

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