There's more than GPS. Human spaceflight has produced many valuable non-invasive wearable biomedical devices because sending up a doctor to monitor the astronau

There's more than GPS. Human spaceflight has produced many valuable non-invasive wearable biomedical devices because sending up a doctor to monitor the astronaut was not an option. NASA research into nutrition has given us better infant formulas. Research into protection of astronauts' eyes has lead to UV-blocking sunglasses. Etc etc.