Two NASA astronauts aboard the International Space Station (ISS) are about to climb into their spacesuits and enter the vacuum of space, and you can watch the event live. The first NASA spacewalk in nearly a year will begin at about 8 a.

Two NASA astronauts will conduct a spacewalk today (March 18) that was delayed by the first-ever medical evacuation of the ISS, and you can watch the action live.

NASA will provide live coverage as two American astronauts are due to spend hours Wednesday, March 18, on a spacewalk outside the ISS.

NASA will provide live coverage of the launch and docking of a Roscosmos cargo spacecraft carrying about three tons of food.

NASA is conducting a critical test ahead of its Artemis II launch, called a wet dress rehearsal. During the dress rehearsal, engineers fill the rocket with 700,000 gallons of propellant and conduct a simulated countdown-to-launch window. Teams conduct a ...