China's Shenzhou 14 astronauts are only just settling in for their six-month mission aboard the country's space station, but Shenzhou 15 is already on standby in case of an emergency in orbit.
Life in orbit is going well for the trio so far, but back on the ground the Shenzhou 15 spacecraft and a Long March 2F rocket have been assembled and tested in case an emergency arises aboard China's Tiangong space station.
"When a spaceship is performing tasks in space, there must be another manned spaceship on standby on the ground for emergency rescue," Jia Shijin, chief designer of the crewed spacecraft system under the China Academy of Space Technology (CAST), explained to CCTV.
"If the spaceship in space is out of order and can't return, then we'll quickly launch this rescue spaceship, which can enter orbit in a very short time and bring the astronauts back to Earth," Jia added.
If all continues to go well with Shenzhou 14, however, Shenzhou 15 will launch sometime around December to carry out its primary, intended mission — sending three new astronauts to the completed three-module Tiangong. There they will meet up with the Shenzhou 14 astronauts for Tiangong's first-ever crew handover.