The toilet trouble is even worse when you consider that seven more astronauts are about to arrive at the station.

NPR: Space Toilet Awaits Repair Mission

It is scheduled to arrive at the station on Wednesday.

BBC: SpaceX lifts off with ISS cargo

It ground to a halt in Kent at about 2245 GMT, but the train brought in to replace it did not arrive at London's St Pancras station until 0235 GMT on Monday.

BBC: Delayed passengers arrive at St Pancras