Washington: The second operational SpaceX Crew Dragon flight to the International Space Station, Crew-2, will have four astronauts on board, NASA has said.
NASA astronauts Shane Kimbrough and Megan McArthur will serve as spacecraft commander and pilot, respectively, for the mission, the US space agency said on Tuesday.
Japan Aerospace Exploration Agency (JAXA) astronaut Akihiko Hoshide and European Space Agency (ESA) astronaut Thomas Pesquet will join as mission specialists.
Crew-2 is targeted to launch in spring 2021, following the successful completion of both NASA's SpaceX Demo-2 test flight mission, which is expected to return to Earth on August 2, and the launch of NASA's SpaceX Crew-1 mission, which is targeted for late September.
The Crew-2 astronauts will remain aboard the space station for approximately six months as expedition crew members, along with three crewmates who will launch via a Russian Soyuz spacecraft.
The increase of the full space station crew complement to seven members -- over the previous six - will allow NASA to effectively double the amount of science that can be conducted in space.
This will be Kimbrough's third trip to space and his second long-duration stay at the space station.
Born in Killeen, Texas, and raised in Atlanta, Kimbrough was selected as an astronaut in 2004.
He first launched aboard space shuttle Endeavour for a visit to the station on the STS-126 mission in 2008, then aboard a Russian Soyuz spacecraft for Expedition 49/50 in 2016.
He has spent a total of 189 days in space, and performed six spacewalks.
McArthur will be making her second trip to space, but her first to the station.
She was born in Honolulu but considers California to be her home state. After being selected as an astronaut in 2000, she launched on space shuttle Atlantis as a mission specialist on STS-125, the final Hubble Space Telescope servicing mission, in 2009.
McArthur operated the shuttle's robotic arm over the course of the 12 days and 21 hours she spent in space, capturing the telescope and moving crew members during the five spacewalks needed to repair and upgrade it.
This will be Hoshide's third spaceflight. He was part of the STS-124 mission aboard space shuttle Discovery in 2008 and a crew member for Expeditions 32 and 33, launching aboard a Russian Soyuz spacecraft in 2012 for a 124-day visit to the station.
Pesquet previously flew as part of Expeditions 50 and 51, launching aboard a Russian Soyuz spacecraft and spending 196 days in space.