Gui Haichao

The launch of the next crew to China’s Tiangong space station late Monday (U.S. time) added three astronauts to the population of humans in space, which reached a record number of 17 people in orbit — six Chinese citizens, five Americans, three Russians, two Saudis, and one Emirati astronaut.

Three Chinese astronaut rocketed into orbit in pursuit of the Tiangong space station at 9:31 p.m. EDT Monday (0131 UTC Tuesday). The crew blasted off from the Jiuquan launch base in northwestern China on a Long March 2F rocket.

The next three-man crew to live on China’s Tiangong space station will launch Monday night on a Long March rocket, heading for a half-year expedition on the orbiting outpost to replace an outgoing team of astronauts set to return to Earth this weekend.