I watched a youtube vid recently (so use that to calibrate your bullshit detector here) that said there are a bunch of companies and even freely accessible sate

I watched a youtube vid recently (so use that to calibrate your bullshit detector here) that said there are a bunch of companies and even freely accessible satellites with Synthetic Aperture Radar covering the entire earth every 12 days. ( https://youtu.be/UKLuei1CnZY https://youtu.be/UKLuei1CnZY )