The three Chinese astronauts on board the Shenzhou-12 spaceship entered the country's space station core module Tianhe on June 17, according to the China Manned Space Agency (CMSA). 

After Shenzhou-12 successfully completed a fast automated rendezvous and docking with the orbiting Tianhe module, the Shenzhou-12 crew entered the orbital capsule from the return capsule of the spaceship.

The trio, who will stay in space for about three months, entered Tianhe hours after the spaceship successfully docked with the core module.