Video: Soyuz MS-01 leaves the space station for landing

Working via remote control this spring, scientists will spark a fire aboard the unmanned Cygnus cargo ship that launches Tuesday to study how the deliberate flames spread in weightlessness.

Outgoing space station commander Randy Bresnik, joined by Russian cosmonaut Sergey Ryazanskiy and European Space Agency flight engineer Paolo Nespoli, returned to Earth early Thursday after nearly five months in orbit. Their Soyuz MS-05 capsule undocked from the International Space Station at 12:14 a.m. EST (0514 GMT), and landed on the steppe of Kazakhstan at 3:37 a.m. EST (0837 GMT).

These photos show the stacking of Japan’s eighth H-2B rocket inside an assembly building at the Tanegashima Space Center over the past few weeks, followed by rollout of the 186-foot-tall vehicle to its launch pad Tuesday.