But Mr Aldrin disagreed with the view that astronauts should test capabilities for a long-duration flight on the Moon before attempting a journey to Mars.

BBC: Moon astronauts urge Mars mission

The exams test your knowledge of such things as how to calculate the duration of a bond and the ethics of accepting a stock tip.

FORBES: Analysts for the world

Combined with other exams, this test helps determine the geographical region students will work in for the duration of their foundation programme - a two-year training course which forms the bridge between medical school and training for a specialism.

BBC: Junior doctor

This flight will shortly be followed by another test run to ensure that everything checks out, after which it will begin its first long-duration mission sometime later this month.

ENGADGET: NASA's unmanned Global Hawk completes key test flight