Astronauts on International Space Station told to shelter as repairs under way to fix air leaks

A full rotation of the planet Mars

Stunning high-definition footage captures the breathtaking launch of the Shenzhou-23 crewed spaceship last night. At 5:13 a.m. today, the in-orbit Shenzhou-21 crew opened the hatch of China Space Station and welcomed the arriving Shenzhou-23 team aboard.This marks the 8th in-orbit crew reunion in China’s space history and a new milestone: for the first time a Hong Kong astronaut has entered the Tiangong space station.