When NASA's New Horizons spacecraft sped by Pluto in 2015, it revealed an incredible world of ice and haze carved by various geological processes — hinting that an ocean may have played a role in the ...

Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action ...

If it weren't for the new budget, New Horizons could keep exploring the outer reaches of the solar system into the 2030s. Reading time 3 minutes On July 14, 2015, NASA’s New Horizons spacecraft flew ...

Discovered in 1930 at the Lowell Observatory, Pluto was demoted as a planet in 2006. Some want President Trump to take action ...

The New Horizons spacecraft sends back its sensational snapshots of Jupiter, and its volcanic moon Io, before the mission's close encounter with Pluto (Photo by: Photo12/Universal Images Group via ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. This image of Pluto was made after the New Horizons spacecraft flew past the dwarf planet on July ...