Um, you can see satellites at night with the aid of binoculars, telescopes, etc. They also have cameras on them and we have people on the space station.
Go here if you want to look at the live feed from the ISS cameras. You can even make it your screensaver. http://richardwestenra.com/live-iss-screensaver/
RE: Are you prepared to open your mind up for this one? Take a read and try to prove they do exist.