Featured in spaceflight
Will Sleeping in a Centrifuge Help Combat Muscle Atrophy in Space?
Preventing astronauts' muscles from withering away clears another hurdle on the road to Mars
Conrad Innovation Awards Announces Winners
High-schoolers' inventions lead the way to outer space; Popular Science was there
Hot Rocket Planes From the X Prize Cup Showcase
While the rocket races will have to wait a year, inventors showed off plenty of private space technology at this year's X Prize Cup showcase