It was morning in Beijing when the Chinese Tianzhou 4 cargo spacecraft reached the Chinese space station’s Tianhe core module. It was launched about seven hours earlier on a Long March-7 Y5 rocket from the Wenchang base. This is the third space freighter launched to the new Chinese space station and carries propellant along with various types of supplies for the taikonauts, as the Chinese call their astronauts, who will arrive in June.