Takuya Onishi, 49, and three other astronauts arrived at the International Space Station on a Crew Dragon spacecraft Sunday, marking the start of their long-term stay.About 90 minutes after the SpaceX spacecraft docked with the station, the connecting hatch was opened. Onishi was the first to enter the ISS. He hugged the waiting crew who rejoiced at their arrival.'I was able to return to the ISS with lots of energy,' Onishi said in Japanese at a ceremony held later. 'From tomorrow, I'll work hard on various tasks, including science at the (Japanese experiment module) Kibo.