Number of living Humans to have walked on another world
With the recent Heart Surgery of Neil Armstrong, I thought it appropriate to post this link to a chart showing how many still living humans to have walked on another world
“The universe is probably littered with the one-planet graves of cultures which made the sensible economic decision that there’s no good reason to go into space—each discovered, studied, and remembered by the ones who made the irrational decision.”
-XKCD