SpaceX has safely brought back four astronauts from the U.S., Japan, and Russia back on Earth, said NASA on Saturday. NASA astronauts Anne McClain and Nichole Ayers, JAXA (Japan Aerospace Exploration Agency) astronaut Takuya Onishi, and Roscosmos cosmonaut Kirill Peskov returned to Earth after spending about 148 days on the International Space Station (ISS).