How can we watch live satellite images of earth?
In general, you can’t. Satellites don’t take live images of Earth on a continually updated basis. They tend to take snapshots periodically. Even then there is nothing to say those images are available – many observation satellites fulfill specialised roles, possibly classified, and releasing those images to all and sundry may well be counterproductive. This needn’t be military: consider an oil company looking for probable locations of new oil reserves. They will have invested a lot of money in that satellite and do not wish to alert the competition to any new finds before they can secure the rights to them.