For decades, Pluto remained one of the most mysterious objects in our solar system, until July 14, 2015, when NASA's New Horizons spacecraft became the first mission to visit it up close, capturing ...

Pluto is the tiniest planet in our solar system with a diameter of roughly 2,377 kilometers, making it even smaller than our moon. Check out these 7 rare photos of Pluto clicked by NASA.

NASA will reveal more of the New Horizons spacecraft's up-close photos of Pluto and its moons today (July 17), and you can watch the unveiling live.

NASA's New Horizons spacecraft made history by flying past Pluto, sending back groundbreaking data that would change our ...

In a historic moment, NASA has unveiled the first truly close-up photos humanity has ever seen of Pluto and two of its moons, thanks to the New Horizons craft -- and they're astounding.

NASA’s New Horizons spacecraft snapped the first high-resolution photographs of Pluto and its moons this week. The images reveal the planetary system in unprecedented detail — highlighting ...

"The pictures might tell us about the surface of the planet and about exactly how big its atmosphere is," 8-year-old Andrew Fetsch said. NASA's New Horizons flies by Pluto ...

Alan Stern, the principal investigator for NASA's New Horizon probe mission to Pluto, famously derided the IAU's decision in 2006, citing the fact that less than 5 percent of all astronomers were ...

RENO, Nev. (MyNews4.com & KRNV) -- NASA is set to make history Tuesday. "NASA and our country has been the first to take pictures of every planet surface with a probe and this is no exception ...

Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

Pluto nearly fills the frame in this image from NASA's New Horizons spacecraft. The image was taken on July 13, 2015, when the spacecraft was 476,000 miles (768,000 kilometers) from the surface.

A composite of enhanced color images of Pluto (lower right) and Charon (upper left), taken by NASA's New Horizons spacecraft as it passed through the Pluto system on July 14, 2015.