NASA sent astronauts to the station for the first time on a ship developed by a private company.
Four astronauts arrived at the International space station as part of the first rotational expedition of the US Space Agency NASA using a spacecraft created by a commercial company.
The crew of three Americans and one Japanese citizen arrived at the station after a 27-and-a-half-hour flight on the Crew Dragon spacecraft created by SpaceX.
It is planned that their expedition will last about six months.
The astronauts joined two Russians and one American who arrived on the ISS in October, starting from Kazakhstan.