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

2013's solar maximum could be weakest since the dawn of the space age

So this is unexpected. The Sun is currently at the peak of its 11-year solar cycle. It should be awash with sunspots, solar flares, coronal mass ejections and the like. And yet, observations indicate our parent star has actually been pretty quiet this year – so quiet, in fact, this year's solar max could go down as… » 7/12/13 1:20pm 7/12/13 1:20pm

NASA is getting ready to search for signs of life on Mars

The goal of NASA's Curiosity rover is to determine if Mars was ever capable of supporting life. But the Agency's next rover, set to launch in 2020, could take things one giant step further. Given recent findings, says Jack Mustard, chairman of the Agency's Science Definition Team, "past Martian life seems possible,… » 7/10/13 12:17pm 7/10/13 12:17pm

Feast your eyes on the first global topographical map of Titan

For the first time ever, planetary scientists have created a topographical map of Titan, the largest of Saturn's many moons, and the second-largest in the entire solar system. The map is a boon to researchers who study Titan, a mysterious moon that is arguably the most Earth-like body in our solar system – and it's… » 5/23/13 3:40pm 5/23/13 3:40pm