Pluto, reveal thyself, and Earthlings, enjoy the show. On Tuesday, NASA's New Horizons spacecraft will sweep past Pluto and present the previously unexplored world in all its icy glory. It promises to ...

When a single spacecraft flew past Pluto in 2015, it rewrote decades of assumptions in a matter of hours. This episode follows the New Horizons flyby that revealed towering ice mountains, vast frozen ...

NASA's New Horizons spacecraft pulled off the most distant exploration of another world Tuesday, skimming past a tiny, icy object 4 billion miles from Earth that looks to be shaped like a bowling pin.

Pluto did in fact both bend and accelerate the trajectory of New Horizons when the spacecraft reconnoitered the dwarf planet in 2015, but only very slightly. There are three reasons the trajectory ...

Nearly five decades after launch, Voyager 1 is still moving, further and deeper into space than any human-made object before it. From Earth, it now operates in total isolation—far beyond the orbit of ...

It's official: NASA's New Horizons spacecraft has gotten humanity's first up-close look at Pluto. The spacecraft sent word of its triumph Tuesday across 3 billion miles to scientists waiting ...

The discovery of another moon around Pluto is exciting news for planetary science, but it's also likely causing some anxiety for the team in charge of New Horizons, a spacecraft set to be the first ...

Pluto's north pole canyons annotated. These close views of Pluto's four smaller moons were captured by NASA's New Horizons probe during its historic July 2015 flyby. Data from New Horizons suggests ...