NASA astronaut Jessica Meir’s video log of the fifth and last full day of the extended exploration phase of ESA’s underground training course CAVES.

Jessica is the team’s biologist and is tasked with searching for alien underground life. Day five saw the ‘cavenauts’ explore around an underground pool wearing wetsuits and travelling further than ever before on a CAVES course. Jessica discusses the scientific tasks of the day finding a possible new species of anthropods and surveying the area with new 3D techniques.