It is time for the astronauts to make their return to Earth after a lengthy stay onboard the ISS. But there is a big problem.
Three astronauts are currently stuck in orbit above the Earth after an unexpected damage to a Russian spacecraft made it impossible to bring the astronauts home.
There is the possibility of sending them back on a rescue ship but the space on the rocket can only take 4 astronauts at a time and not seven.
