The Crew-11 mission has left the International Space Station and have arrived back on Earth. Crew Dragon Endeavour and its crew of four — comprised of two NASA astronauts, one Japanese astronaut, and one Russian cosmonaut — splashed down in the Pacific Ocean at 12:40 AM PST (08:40 UTC) on Thursday, Jan. 15.

Californians were left fearing an earthquake had struck when they felt a sonic boom as NASA's Crew-11 re-entered the Earth's atmosphere aboard their SpaceX Dragon, which was returning early from a mission to the International Space Station (ISS) due to an urgent medical issue with one of the astronauts.

The four-person crew from NASA's SpaceX Crew-11 mission to the International Space Station safely splashed down into the Pacific Ocean off the coast of San Diego County early Thursday morning.

The Crew Dragon capsule parachuted into calm seas off ​San Diego at about 12:45 a.m. EST (0845 GMT), capping a 10-hour-plus descent from the International Space Station and fiery re-entry through Earth's atmosphere,