Live coverage: Ariane 5 blasts off with two Intelsat satellites

A hydrogen-fueled main engine and four solid rocket boosters combined to propel a United Launch Alliance Delta 4 rocket off its launch pad at Cape Canaveral on March 15, successfully sending a U.S. Air Force communications satellite into orbit.

A SpaceX Falcon 9 rocket thundered into space from Cape Canaveral and deployed a Turkish communications satellite Thursday night, the first of more than 40 Falcon rocket missions scheduled this year from launch pads in Florida and California.

Touching down after 340 days in orbit, astronaut Scott Kelly and cosmonaut Mikhail Kornienko have returned to Earth from the International Space Station aboard a Soyuz crew capsule commanded by Sergey Volkov. Landing in Kazakhstan occurred at 0426 GMT Wednesday (11:26 p.m. EST Tuesday).