Its the best ride in all of the four parks.
Its a simple cat coaster (actually its two different cat coasters in the same building). Except for the launch (the climb), the ride is in the dark. In the dark, however are lots of stars, galaxies and planets. The cars fit four people (single file) and have low walls that allow you to see the stars all around you. What makes the ride exciting and different from your standard cat coaster is that you do not know what the coaster is going to do next. It is fast, but not terribly violent. Probably a 90 second ride - great theming throughout.
This is a "must do". Get a fastpass though, the line is long.