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 ...

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 ...

Many of us harbor nostalgia for the days when Pluto was still classified as one of the solar system’s official planets, but its dwarf planet status didn’t make Pluto any less interesting. During its ...

PROVIDENCE, R.I. (WPRI) — The New Horizons spacecraft passed by Pluto Tuesday morning, traveling 3 billion miles over the course of nearly a decade to take up-close photos of the dwarf planet for the ...

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 ...

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 ...

The frozen world of Pluto may not have always been completely frozen. In images taken by NASA’s New Horizons spacecraft when it flew past Pluto in July, scientists have spotted dendritic features that ...

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A seasonally inspired stream for the curious, but distracted. Let us know what you think. By The New York Times In the 13 minutes it will take you to watch the video above, NASA’s New Horizons ...

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 ...