3,699 karma · joined December 7, 2008
Anything smaller while also lasting long enough to do an experiment on and you'd likely end up producing too much energy and destroying the planet.
curl -s --retry 10 --retry-all-errors --remote-name-all --parallel --parallel-max 150 "https://api.pwnedpasswords.com/range/{0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F}{0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F}{0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F}{0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F}{0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F}"When a black hole accretes matter, the matter can create tremendous radiation before it crosses the event horizon due to the atoms experiencing many effects such as rapid nuclear fusion and becoming new forms of matter such as neutronium. The precise amount of energy released depends on spin, charge, and size of the black hole, and the speed at which the matter approaches the black hole.
If a tiny black hole (Let's say 10cm across) ripped through the earth at significant speed it would be like the center of the planet momentarily became the center of a star and (hand waving a bunch of assumptions) the total energy could easily be greater than the gravitational binding energy of the planet. The planet would explode.
AV1 is supported by almost all web browsers: https://caniuse.com/av1
This telescope design already has a giant hole in the middle, and the light-collecting capabilities are hardly affected by small holes.
They are shipping soon after many delays.