Astronomers have found a protoplanetary disk surrounding a young star with a rather chilly secret.
What will the NASA spacecraft do when it reaches Jupiter this year?
Pictures are still filtering back from NASA's New Horizons close-up of Pluto last year and one of the biggest surprises so far comes from the region informally known as Sputnik Planum.
There are few more potent reminders that Mars used to be a wet world than seeing ancient, dried up river beds etched into the red planet's surface.
Newly returned pictures taken by NASA’s New Horizons spacecraft are giving scientists -- and the rest of us -- the most detailed views of Pluto’s stunningly diverse landscape.
When the moon was formed from a massive planetary collision billions of years ago, somehow very little of Earth's water ended up on the moon -- and planetary scientists aren't sure why. Continue reading →
A new study shows the moon is likely to break apart before it hits the atmosphere, creating a debris ring that will encircle Mars for millions of years.
For the first time, astronomers have directly observed a planet in the making.
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