Could a mirror/s be made to reflect one side of the Earth from the edge of the solar system and viewed with a optical or radio telescope? What if we could see any depth in the past in real analog time? With night vision and thermal could something like this be used like CCTV for the World?
https://engineering.stackexchange.com/questions/12518/how-many-times-can-the-best-mirrors-reflect-in-space