This was the case but isn't really true anymore. With the proliferation of commercial LEO imaging satellites there's pretty much always one above you. Synthet

This was the case but isn't really true anymore. With the proliferation of commercial LEO imaging satellites there's pretty much always one above you. Synthetic aperture radar satellites work at night and under the clouds as well so if you're trying to hide an aircraft development program it's going to be rather difficult. edit: Radar messes with SAR as well but the government hasn't even bothered to try to shield Area 51. https://www.bellingcat.com/resources/2022/02/11/radar-interference-tracker-a-new-open-source-tool-to-locate-active-military-radar-systems/ https://www.bellingcat.com/resources/2022/02/11/radar-interf...