Kaela Polkinghorn sat in the darkened dome theater of Tampa’s Museum of Science and Innovation and watched eight planets ...

The discovery of another moon around Pluto is exciting news for planetary science, but it's also likely causing some anxiety for the team in charge of New Horizons, a spacecraft set to be the first ...

Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action ...

When NASA's New Horizons spacecraft sped by Pluto in 2015, it revealed an incredible world of ice and haze carved by various geological processes — hinting that an ocean may have played a role in the ...

President Donald Trump campaigned on "America first," but some of his supporters and appointees apparently want Pluto to once again be ... ninth. The ninth planet in our solar system, that is. Ever ...

Pluto's 2006 status change from planet to dwarf planet is still a sore subject for many, including a fourth grader in Tampa, ...

Pluto did in fact both bend and accelerate the trajectory of New Horizons when the spacecraft reconnoitered the dwarf planet in 2015, but only very slightly. There are three reasons the trajectory ...

It may look a little blurry, but the bright orange-tinted circle in the middle of the photo above is the first color image of Pluto and its largest moon, Charon. The image was taken by the Ralph color ...

For no explainable practical reason, humans are enamored with – and even empathetic toward – specific inanimate objects. Our first car. A choice coffee mug. And for a particular subset of the ...