A Long March 2F rocket climbs through the sky after lifting off from the Jiuquan launch base with the Shenzhou 16 astronauts. Credit: China Manned Space Agency
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.

