TIL there is an actual project aiming to develop a sub gram nano spacecraft with cameras and all and send it to the Alpha Centauri star system with a travel speed of 1/5th of the speed of light

https://breakthroughinitiatives.org/

https://www.reddit.com/r/todayilearned/comments/15r4stk/til_there_is_an_actual_project_aiming_to_develop/