Video: Change of command aboard International Space Station

Picking up where they left off last week, two space station astronauts ventured back outside the outpost Wednesday to continue the replacement of aging batteries in the lab’s solar power system. Two more spacewalks later this month should complete the multi-year project.

Sierra Nevada and United Launch Alliance have announced the most powerful version of the Atlas 5 rocket, with five strap-on boosters and a twin-engine upper stage, will send the first two Dream Chaser cargo missions to the International Space Station from Cape Canaveral in 2020 and 2021, a schedule that still must be confirmed by NASA.

Two days after blasting off from Kazakhstan, three new crew members docked with the International Space Station early Saturday to begin nearly four months of scientific experiments and maintenance on the orbiting research outpost. The Soyuz spacecraft linked up with the space station’s Rassvet module at 12:06 a.m. EDT (0406 GMT).