The Amazingly Creepy Way Mars Will Kill Its Moon

It was a rough month for Phobos, as astronomers decreed—yet again—that Mars is ripping its lumpy moon apart. But apparently, Phobos’ loss is the Red Planet’s gain. After the satellite is torn to pieces, its fragments will fan out into a disk and 20 million years from now, Mars will become a ringed planet. »Wednesday 10:30am11/25/15 10:30am


A New Study Challenges Assumptions About the Origins of Earth's Water

Water, water everywhere, but how on Earth did it get here? Many scientists believe that Baby Earth formed dry and was later soaked by an onslaught of extraterrestrial impacts. But a new study challenges that view, arguing that our planet has had water from the start. In fact, we have have inherited it from the tiny… »11/14/15 3:00pm11/14/15 3:00pm

An Earth-Sized Neighbor May Be the Most Important Exoplanet Yet

Astronomers have discovered a rocky, Earth-sized planet 39 light years from home—right in our cosmic backyard. With a surface temperature of 440 degrees Fahrenheit, GJ 1132b is more of an intergalactic furnace than a vacation prospect. Yet some are hailing it “the most important planet ever found outside our solar… »11/11/15 6:00pm11/11/15 6:00pm

Space Probe to Dive Through Geysers Erupting from Saturn's Icy Moon Enceladus

Saturn’s ice moon Enceladus is a brilliant white snowball. It’s got a global ocean beneath its surface. It’s got freakkin’ ice volcanoes. Best of all, based on samples collected during today’s historic flyby with NASA probe Cassini, we might soon know if Enceladus is habitable. »10/28/15 2:54pm10/28/15 2:54pm

Why It'll Take New Horizons 16 Months to Send Us This Week's Data

Early this morning, NASA rolled out the highest-resolution image of Pluto to date, taken 16 hours before today’s historic flyby. Tomorrow, we’ll receive a new set of images at a resolution ten times higher. And Pluto Christmas is just getting started, because it’s going to take NASA 16 full months to download all the… »7/14/15 8:59pm7/14/15 8:59pm