ScienceAstronaut Scott Kelly Hands Over ISS Command To Tim Kopra On Leap Day NASA astronaut Scott Kelly has now handed over the command of the International Space Station to fellow astronaut Tim Kopra. Kelly and two cosmonauts will be returning to Earth on Tuesday.by Alyssa Navarro
ScienceAtacama Desert Serves As Laboratory To Test Instruments For Hunting Life On Planet Marsby Rhodi Lee
SpaceUS Air Force Unveils First Official Image Of B-21, Its Next-Generation Stealth Bomberby Vincent Lanaria
ScienceAstronaut Scott Kelly's Twin Brother Mark Helps Researchers Study Impact Of Living In Spaceby Rhodi Lee
ScienceFlying To Mars In Just 30 Minutes May Be Possible Using Laser Propulsion Systemby James Maynard