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SpaceX's Starship – the most powerful rocket ever built - has exploded in mid air after launching in its second attempt There were tense scenes as the launch at Boca Chica, Texas was halted with two seconds to go, before getting the final go-ahead minutes later. SpaceX staff clapped and cheered as the rocket slowly blasted off in a giant plume of smoke. Subscribe here: #SpaceX #Starship #BBCNews
