A SpaceX mission was canceled on Wednesday to bring home a pair of astronauts who have been on the ISS since June.

The decision to abort the launch came with less than an hour before the rocket would have soared into the sky and with the four astronauts already strapped into their positions.

SpaceX and the National Aeronautics and Space Administration, NASA, have explained why they cancelled the planned rocket launch of Crew-10 to the International Space Station, ISS, on Wednesday.