The Long March 5B rocket is a cornerstone of China's space exploration plans. The same vehicle will carry the country's Mars mission, dubbed Tianwen, that is scheduled to launch this summer. And the heavy-lift rocket is also necessary for launching modules of the new space station China plans to build. And then, there's the crew capsule.
Today's flight is an uncrewed test mission for that vehicle, with China particularly eager for data on the performance of its heat shield and parachutes, among other aspects of the unnamed capsule, according to SpaceNews (opens in new tab). The capsule should be able to carry six or seven astronauts at a time, according to a statement from China Aerospace Science and Technology Corporation (opens in new tab), a state-owned contractor for the space agency.
The Long March 5B is capable of lifting 25 tons of payload to low Earth orbit, a vital requirement for China's dreams of building a new space station. The rocket is also equipped with a fairing of larger diameter than the nation has launched before, a requirement for the modules under consideration.
Lift-off of today's mission occurred at 6 p.m. local time (6 a.m. EDT, 1000 GMT). About 8 minutes after launch, the rocket and capsule separated. Assuming the rest of the crew capsule's flight goes smoothly, today's success will open the door to a slate of 11 launches designed to facilitate space station construction, Zhou Jianping, chief designer for the crewed program, said in a statement (opens in new tab).
The three-module space station, called Tianhe, is designed to focus on science, with a range of research possible in orbit, including astronomy, life sciences, materials sciences and combustion, Zhou added.
China has managed two space laboratories before: Tiangong-1, which launched in 2011, and Tiangong-2, which launched in 2016. The nation first launched its own astronauts, dubbed taikonauts, in 2003, but has not launched any crewed missions since 2016.
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