NASA and Elon Musk's commercial rocket company SpaceX launched a new four-astronaut team on a flight to the International Space Station early on Friday, the first crew ever propelled toward orbit by a rocket booster recycled from a previous spaceflight.

The company's Crew Dragon capsule, Endeavour, soared into the darkened pre-dawn sky atop a SpaceX Falcon 9 rocket shortly before 6 am Eastern time (1000 GMT) from NASA's Kennedy Space Center at Cape Canaveral, Florida, in a blastoff aired live on NASA TV.

The crew is due to arrive at the space station, which orbits some 250 miles (400 km) above Earth, early on Saturday following a flight of nearly 24 hours.

The mission marks the second "operational" space station team to be launched by NASA aboard a Dragon Crew capsule since the United States resumed flying astronauts into space from US soil last year, following a nine-year hiatus at the end of the US space shuttle program in 2011.

It is also the third crewed flight launched into orbit under NASA's fledgling public-private partnership with SpaceX, the rocket company founded and owned by Musk, the billionaire entrepreneur who is also CEO of electric carmarker Tesla Inc.

The first was an out-and-back test mission carrying just two astronauts into orbit last May, followed by SpaceX's first full-fledged four-member crew in November.

Friday's Crew 2 team consists of two NASA astronauts - mission commander Shane Kimbrough, 53, and pilot Megan McArthur, 49, - along with Japanese astronaut Akihiko Hoshide, 52, and fellow mission specialist Thomas Pesquet, 43, a French engineer of the European Space Agency.

Reuters