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'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, ...

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 ...

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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 can often use our knowledge of planet Earth to explain the things we see on other worlds, although we may have to tweak the physics to account for a different temperature or a tenuous atmosphere.

Pluto and its largest moon, Charon, whirl around each other in images that NASA released August 8. When NASA’s New Horizons spacecraft snapped these photos last month, the probe was roughly 10 times ...

Jackson Ryan was CNET's science editor, and a multiple award-winning one at that. Earlier, he'd been a scientist, but he realized he wasn't very happy sitting at a lab bench all day. Science writing, ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. On Saturn's largest moon, water and oil would mix — opening the door to exotic chemistry in our ...

To get a feel for why we say “Science Never Sleeps,” take a look at our Pluto encounter planning schedule for this fall. As you can see, our small team uses the spacecraft hibernation periods to get ...

Telescope at Lowell Observatory in Flagstaff, Ariz. The first thing you notice about the Lowell Observatory, the place where Pluto was discovered, is that the little guy gets top billing. The road ...