Doctor Who is in a big trouble. The black hole almost sucked in the TARDIS, but there is still a slight chance to escape it. Bounce of the asteroid to accelerate in other direction and reduce the gravitation of the black hole.
The gravitation of the black hole is enormous and Doctor Who is in trouble. The TARDIS is near it and a few minutes after everything will be over. Doctor Who will be sucked by the black hole and either die or travel to other dimension. Help him to escape the gravitation field of the black hole using the asteroids as the bouncing platform.