CNET editor Sharon Profis takes Apple Pay, Google Wallet and PayPal for a test drive and compares the options.
The Air Force says that the almost one-of-a-kind spacecraft "conducted on-orbit experiments" in the the longest-ever mission for the X-37B program.
A large comet swooped in close to Mars over the weekend. NASA's orbiters had to hide from the debris, but still captured some great shots.
A rare close flyby of a comet near Mars put NASA's orbiters in a potentially dangerous situation, but also allowed them to study the moving space object.
How do space agencies keep the International Space Station from smelling like a sweaty locker room? NASA engineer Robert Frost and retired astronaut Clayton C. Anderson reveal a few secrets.
Using tech known as lidar, a device will map forests in 3D and increase understanding of their role in the carbon cycle.
A new company called Mesoloft will rocket your ashes to near space, where they will likely traverse the globe before becoming the seeds of raindrops and snowflakes.
The closest look ever at a new comet will happen when the mountain-size comet Siding Spring buzzes past Mars this weekend.
The world's most powerful rocket, designed to carry humans to Mars, is scheduled for a test launch in 2018.
A fascinating NASA presentation suggests that in July 2012 Earth was one week away from being struck by a massive solar storm that would have had devastating effects. Can this be?