NASA Administrator Jim Bridenstine and a SpaceX representative are holding a press briefing at the Kennedy Space Centre on Saturday, after a Falcon 9 carrier rocket with NASA astronauts Bob Behnken and Doug Hurley blasted off from Cape Canaveral, Florida.
The Dragon capsule and the Falcon 9 carrier rocket were constructed by Elon Musks's Space X company for NASA.
Today's launch is the first crewed extraterrestrial mission from the United States in nine years, as NASA retired the shuttle fleet in 2011 and has relied on Russian spacecraft since then.
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