Micro Balloon


small and cheap [Satellite](https://texonom.com/satellite-3464395d523344d492d27a7c8cb769a9) 
> [Urban Sky's Earth-imaging stratospheric 'microballoons' are ready for a close-up](https://www.theverge.com/2022/6/23/23177434/urban-sky-stratosphere-microballoons-earth-imaging-remote-sensing)
