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Could a Massive Collision Produce a Subsurface Ocean on Pluto?

Pluto and Charon have captured our hearts and imaginations. But how did these adorably strange worlds form, and what consequences could that have on what we see now? Researcher Amy Barr Mlinar chatted with us about catastrophic collisions, subsurface oceans, and Pluto’s lack of craters. » 7/22/15 11:08am 7/22/15 11:08am

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 8:59pm 7/14/15 8:59pm

NASA's Next Mars Mission Launches Today – Watch it Here Live!

NASA's newest Martian explorer – the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft – is finally ready for lift-off. Currently poised atop an Atlas V rocket at Cape Canaveral in Florida, the Mars-bound orbiter is slated to launch this afternoon at 1:28 pm ET. Live coverage of the launch begins right now! » 11/18/13 8:00am 11/18/13 8:00am

What created such enormous craters on the Moon's nearside?

Earth's moon has been blasted by a lot of space rocks in its 4.5-billion-year history. While these impacts have left a near-uniform distribution of craters across our satellite's surface, planetary scientists have shown that one of its sides – the side that faces Earth – bears significantly larger scars than the… » 11/07/13 12:58pm 11/07/13 12:58pm