For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets ...

A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked ...

Although previous images showed that something was happening on Pluto, with an average temperature of -240C, many people assumed it was a cold and relatively dead world. That was until NASA's 'New ...

NEW YORK (AP) — NASA’s Webb Space Telescope has identified new clues about the surface of Pluto’s largest moon. It detected for the first time traces of carbon dioxide and hydrogen peroxide ...

No longer a planet but not forgotten, Pluto’s colors, captured by NASA almost 10 years ago, continue to dazzle among the collection of colorful celestial objects only seen in the solar system.