Live coverage: Two Americans, one Russian back on Earth from space station

NASA announced Monday it will order at least six reusable Orion crew capsules from Lockheed Martin for $4.6 billion to fly astronauts to the vicinity of the moon in the 2020s, and the agency said it plans to purchase hardware for up to 12 Orion vehicles by 2030.

Northrop Grumman’s Antares rocket will deliver a Cygnus supply ship into orbit Saturday to begin a pursuit of the International Space Station.

Watch a replay of Monday’s Falcon 9 launch as seen from the Kennedy Space Center press site, a viewpoint around three miles from pad 39A.