Fig. 1: Increasing time and breadth of astronauts.
From: Protective alleles and precision healthcare in crewed spaceflight

A The cumulative number of astronauts who have been in space, plotted by the year of their first mission. B Boxplots representing the age of astronauts on their first mission plotted by the decade of their first mission. C Boxplots representing the cumulative amount of time an astronaut spent in space plotted against the number of missions in which they have participated. Blue signifies male and pink signifies female astronauts in all plots. Data was scraped from supercluster.com on September 20th, 2021. Only astronauts who spent time in space and crossed the Kármán line are displayed.