In order to investigate the effect on human sperm, the team decided to subject it to microgravity by use of a parabolic flight, also known as "the vomit comet", named because of how nauseous it ...

This clip is from the series Wonders of the Universe. Student could design an advert for the 'Vomit Comet' using labelled force diagrams to illustrate how it works, and what the passengers would ...