Article feom three years ago.
Credit to https://twitter.com/sphinxhaven/status/1621473569204015105?s=46&t=yBkgS7E-HwcqEdtmxmRqoA
Up to 25 unmanned solar-powered balloons are being launched from rural South Dakota and drifting 250 miles through an area spanning portions of Minnesota, Iowa, Wisconsin and Missouri, before concluding in central Illinois.
deleted by creator