Scientists are starting to get a clearer picture of how Pluto’s strange, hazy atmosphere works. Their latest discovery, concerning waves rippling through the dwarf planet's atmosphere, means that ...

Wacky worlds The orbits of Pluto's four smaller moons are thrown out of kilter by the gravitational tug-of-war between Pluto and its largest moon Charon, a new study shows. The study, published in the ...

Welcome to the edge, humanity. NASA’s flight to Pluto, called New Horizons, arrives Tuesday morning at the cold, dim, and above all mysterious rock that used to be the unofficial edge of the solar ...

In late August 2006, new discoveries upended a traditional, comfortable way of viewing our solar system: Scientists decided Pluto wasn’t a planet after all. Some space nerds like to mourn Pluto’s loss ...

Imagine throwing a baseball. Easy, right? Maybe you've already done it a few times. Now imagine throwing a baseball on the moon. Maybe you've seen enough videos of astronauts bouncing around up there ...

So, a story surfaced on the internet earlier this month that seems to have a lot of people excited about January 4th, 2014, or so-called 'Zero G Day'. Apparently, a planetary alignment between Jupiter ...

The first spacecraft to make a flyby of Pluto and its moons is now beyond Pluto. And scientists are hoping New Horizons will get the funding and approval to head to a new destination — one of those ...

One robot spacecraft ended its life on Mercury this week, while another set its sights on Pluto. After nine years in space — four of them orbiting the closest planet to the sun — the MESSENGER ...