Two NASA astronauts have completed a nearly six hour long spacewalk to maintenance and upgrades on the International Space ...

China also has beaten America to the punch with highly accurate hypersonic missiles that can fly at five times the speed of sound and change course along the way. American security analysts call them ...

As storm season ramps up, so does lightning danger -- and with it, decades of misinformation. Let's set the record straight ...

The core stage for NASA’s Space Launch System (SLS) rocket, which is slated to launch astronauts around the moon since the ...