Social Distancing Mental Health Tips From a NASA Astronaut Who Lived in Space Posted byDan Bova April 21, 2020May 30, 2020 Leave a comment on Social Distancing Mental Health Tips From a NASA Astronaut Who Lived in Space Tracy Caldwell Dyson has logged more than 188 days in space and over 22 hours on spacewalks. She knows a thing or two about isolation.