TIL that astrophysicist Stephen Hawking once hosted a party but nobody showed up because he sent the invitations for the party only the day after, thus basically proving by experiment that time travel is not possible.

https://en.wikipedia.org/wiki/Hawking%27s_time_traveller_party?wprov=sfla1
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1gvy03n/til_that_astrophysicist_stephen_hawking_once/