But General Exooplyth would not be hanging around Earths upper atmosphere. If they did actually enter our solar system; all they'd have to do is radio ahead. "Hey guys we are on our way; we are 1 light year out; lets meet on Pluto." But we can't reach Pluto at the current time too easily.

As bad as the movie Contact was; Sagan nailed it; regarding the premise of how it might take place. Forget the "UFO's on the White House Lawn" thats just trashy comic book stuff.

First we'll get a radio signal. The signal will contain information; instructions, directives; blueprints, and procedures.

Don't think Star Wars. Think Scientific conference.