We know about Pluto. But we don’t really know it ... We’ll finally get to meet the former ninth planet face-to-face—to really see its surface and that of its largest moon, Charon.

Then, of course, came the New Horizons mission. New Horizons Unveils Pluto’s True Face The watershed moment in Pluto’s exploration came in July 2015, when NASA’s New Horizons spacecraft flew ...

Pluto was discovered at Lowell Observatory in Flagstaff, Arizona in 1930 and was considered our ninth planet until 2006. The International Astronomical Union reclassified Pluto as a dwarf planet ...

I have two kids under the age of 6 and take them on trips regularly. They might not remember our adventures, but I will.

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) What was discovered in Flagstaff, Arizona, and killed off in Prague?

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe. Clyde Tombaugh didn't set out to discover Pluto when he sent his ...

Pluto, with its heart-shaped glacier, as captured by the New Horizons spacecraftJPL/NASA Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it, of ...