Dr Alan Bruce conducts an experiment with liquid nitrogen.
The Tayside Space School cadets went through their final training at Abertay University on Saturday in preparation for the week-long summer school at the end of the month.
The aspiring astronauts have already learned about the solar system, what would happen to their bodies if they went into space without a spacesuit and the exploratory endeavours that humans have achieved so far.
On Saturday, the cadets found out about food contamination and some of the other challenges that astronauts face in space.
They learned about Hazard Analysis Critical Control Point (HACCP), which is a food safety tool that was designed by Nasa and a company called Pillsbury in the 1960s to prevent astronauts from getting sick but is now part of the food industry.
Cadets took part in a number of hands-on experiments and had the chance to play detective when they tried to find the source of contaminated food.
Food technologist Dr Jon Wilkin led a session on food contamination in space and Dr Alan Bruce held a session on the magic of science in space.
