Scientists have called for Pluto to be classified as a planet again following a new study into planetary science. Pluto was controversially relegated to the status of “dwarf planet” in 2006 by the ...

Pluto was dismissed as a frozen has-been at the edge of the solar system. But when NASA finally got a close look, what they ...

Pluto's largest moon, Charon, likely formed through a capture event in the early, crowded Kuiper Belt. Three-body encounters ...

In the hope of ending years of wrangling, a committee of astronomers and historians has proposed a new definition of the word "planet" that would expand at a stroke the family of planets from nine to ...

The science payload for NASA’s New Horizons mission completed its last major preparations for flight last week. The probe will be the first to visit Pluto and its moon, Charon. The compact New ...

The biggest known ice volcanoes, which spew ice instead of lava, are located on Pluto. Now it turns out size is not the only feature setting apart Pluto's "cryovolcanoes" from all others. In a study ...

The icy process may be present on other worlds. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Pluto is geologically alive. Bizarre geometric ...

We now know Pluto much better, thanks to NASA's New Horizons mission, leaving CNET's Eric Mack to wonder how the former planet compares to our home rock. Eric Mack has been a CNET contributor since ...

Pluto's atmosphere is going through a strange transformation, scientists are finding. The icy dwarf planet, which lies over 3 billion miles (4.8 billion kilometers) away from Earth in the Kuiper Belt, ...

Astronomers recently discovered two more moons orbiting Pluto in addition to its already-discovered moon, Charon. Madeleine Brand talks with Ira Flatow, host of NPR's Talk of the Nation Science Friday ...