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 ...

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 ...

NASA unveiled its first false-color, close up portrait of Pluto Friday afternoon. The findings reveal a surprisingly active world filled with glaciers of nitrogen and methane ice. Another image ...

The space probe began making discoveries even before today's flyby. — -- Three billion miles and nearly ten years of travel led up to the moment NASA's New Horizons probe zoomed past Pluto today, ...