TIL the last time a supernova (a powerful and luminous explosion of a star) was visible with the naked eye was in 1604. Known as "Kepler's Supernova", it was so bright it was visible during the day for a period of three weeks.

https://en.wikipedia.org/wiki/Kepler%27s_Supernova
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1go7o6w/til_the_last_time_a_supernova_a_powerful_and/