Not to be rude, but I would have thought that the que lines out front should have given a clue. In all fairness, the lines aren't what they used to be, everytime we go to Epcot the lines are practically walk on, one of the few that you will find anymore.
The ride itself, Spaceship Earth, is a dark ride where you sit in a vehicle that is on a constantly moving track. You begin with the first forms of communication, paintings found on walls and slowly transport through time seeing how far we have come when it comes to communication and then you find yourself in outer space. The ride is really great for a cool down or if you have younger children who could use a 15 minute nap.