Pluto is so far away from Earth that everything we know about it can be written down on a couple of 3 x 5 inch index cards. But Pluto will come into clearer focus in a few years' time, though, as NASA ...

In 2006, Pluto was demoted from planet to “dwarf planet”-a reclassification that satisfied astronomers who felt its mass was too small to be a true planet. However, many people who grew up including ...

Discovered in 1930, Pluto is a complex and mysterious world with mountains, valleys, plains, craters, and glaciers. Here are ...

NASA ’s New Horizon’s probe reached Pluto today. In honor of its arrival, here are nine facts about the former ninth planet. In 2006, the New Horizons probe was launched (Pluto was still considered a ...

Pluto was once considered one of the solar system’s planets but was later downgraded to the status of ‘dwarf’ planet after several more similarly sized objects were discovered throughout our solar ...

CAPE CANAVERAL, Fla. -- Little Pluto is a little bigger than anyone imagined. On the eve of NASA's historic flyby of Pluto, scientists announced the New Horizons spacecraft has nailed the size of the ...

Forbes contributors publish independent expert analyses and insights. Kevin Anderton, Kansas City-based science reporter and graphic artist. Since July 2015, NASA's New Horizons space probe has been ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists announced the discovery of a new moon around Pluto today (July 11), bringing the dwarf ...