SpaceX's Falcon takes four NASA astronauts to International Space Station in first operational space mission

Elon Musk-owned SpaceX achieved yet another milestone by taking four NASA astronauts onboard the Falcon rocket to the International Space Station on Sunday. This was the private space firm's first full-fledged taxi flight for NASA. The rocket was launched from Kennedy Space Center with three Americans and one Japanese astronaut. NASA Administrator Jim Bridenstine said, "vigilance is always required on every flight."