https://www.nasa.gov/solar-system/asteroids/asteroid-fast-fa... https://physics.stackexchange.com/questions/47754/minimum-si...
> Space rocks smaller than about 25 meters (about 82 feet) will most likely burn up as they enter the Earth’s atmosphere and cause little or no damage.
(This one is 1m, so it's a pretty good margin.)
https://www.nasa.gov/solar-system/asteroids/asteroid-fast-fa... https://physics.stackexchange.com/questions/47754/minimum-si...
> Space rocks smaller than about 25 meters (about 82 feet) will most likely burn up as they enter the Earth’s atmosphere and cause little or no damage.
(This one is 1m, so it's a pretty good margin.)