Seen various versions of this around: https://astronomy.com/magazine/2019/07/dark-matters--shadowy-effect--on-earth https://astronomy.com/magazine/2019/07/dark

Seen various versions of this around: https://astronomy.com/magazine/2019/07/dark-matters--shadowy-effect--on-earth https://astronomy.com/magazine/2019/07/dark-matters--shadowy...