It’s been a crazy week learning about Pluto as the New Horizons spacecraft makes the first-ever close encounter with the dwarf planet. Join us as we live-blog the very first science results as the ...

New research suggests Pluto may have had a “kiss” with its largest moon billions of years ago in a harmless collision. The report, published in “Nature Geoscience,” describes how the minuscule dwarf ...

At this time next year, NASA's probe New Horizons will fly by the planet-like object Pluto and discover more about the icy ball. The last time scientists reached for a major solar system body was ...

Planetary scientist Kelsi Singer was an undergraduate in 2006 when a spunky spacecraft launched with an ambitious goal: to fly by Pluto. It would take nearly a decade for the New Horizons probe to ...

With recent pictures from NASA’s New Horizons space probe thrusting Pluto to center stage, some educators may be wondering how to better incorporate the icy, 1,473-miles-in-diameter sphere into their ...

If you're my age, you probably remember learning that Pluto was the ninth planet in the solar system when we were kids, as 75 years of generations had before us. We learned that My Very Excellent ...

Pluto has been given a new name to reflect its new status as a dwarf planet. On Sept. 7, the former 9th planet was assigned the asteroid number 134340 by the Minor Planet Center (MPC), the official ...