Asteroid sampled by NASA may once have been part of an ocean world

A sample from the asteroid Bennu, brought back by the OSIRIS-REx mission, feature hints that it was once part of a planetesimal with conditions favourable for life to emerge

​A sample from the asteroid Bennu, brought back by the OSIRIS-REx mission, feature hints that it was once part of a planetesimal with conditions favourable for life to emerge A sample from the asteroid Bennu, brought back by the OSIRIS-REx mission, feature hints that it was once part of a planetesimal with conditions favourable for life to emerge