Pluto was once dismissed as a frozen leftover at the edge of the solar system, until we finally got a close-up look. What we found was a world packed with surprises: strange landscapes, possible icy ...

CAPE CANAVERAL, Fla. (AP) — NASA’s New Horizons spacecraft got humanity’s first up-close look at Pluto on Tuesday, sending word of its triumph across 3 billion miles to scientists waiting breathlessly ...

Once the quirky underdog of our solar system, Pluto held planetary status until 2006, when it got a cosmic demotion that still stings space fans. Discovered in 1930, Pluto was the ninth planet for ...

In a span of 30 years — from the first moon rockets in 1959 to the Voyager 2 flyby of Neptune in 1989 — NASA spacecraft introduced the world to close-up views of the bodies in our solar system.