Video: Change of command aboard International Space Station

Russian launch crews on two continents are putting the final touches on a pair of Soyuz rockets scheduled to blast off less than two hours apart Friday — one carrying a three-man crew to the space station, and another boosting two European navigation satellites into orbit from the Amazon jungle.

NASA managers held a flight readiness review Friday and cleared SpaceX to press ahead with work to ready a Falcon 9 rocket and Crew Dragon commercial ferry ship for launch March 2 on an unpiloted test flight to the International Space Station.

Shuttle veteran Scott Kelly first heard about NASA’s plans to send an astronaut to the International Space Station for nearly a full year shortly after he completed his third space flight in 2011, a 159-day stay aboard the orbital lab complex.