Author Stephen Walker discusses his biography on Yuri Gagarin with The World's host Marco Werman.
Engineer Christine Dailey spends her time puzzling over problems like exercising in space, fuel slosh in zero gravity and more.
Most satellites are engineered to last a long time, but there's no way to repair or refurbish them. They simply become obsolete. Government agencies and private companies are trying to change that.
The moon may be airless, but we know it has oxygen — Apollo mission samples confirmed its presence in the moon’s soil.
Twenty-five of Uranus’ 27 moons are named for characters in Shakespeare’s plays. Why?
People from across the globe took to rooftops, hills, observatories and beaches to get a glimpse of the closest supermoon to Earth in almost seven decades, and snap photos of the event.
Mike Massimino has been to space twice to repair the Hubble Telescope, but his career as an astronaut wasn’t always likely.
Pictures from space can be turned into amazing art.