Someone on Twitter said this is a new description... not sure if it is...
An Extraterrestrial Escapade
Begin your adventure by touring the Galaxarium—a planetarium-like exhibition showcasing the similarities and differences between Xandar and Earth’s galaxies. You’ll even get to discover some of the incredible wonders of Xandar and learn about their technology.
Just as you are about to reach the culmination of the tour, everything goes sideways, and you are called into action to help the Guardians of the Galaxy. Are you ready to rock out on an awesome quest across the cosmos to save the galaxy? It’s all up to you!
This family-friendly attraction features the first ever reverse-launch on a Disney coaster and is one of the longest enclosed coasters in the world! A new innovation from Walt Disney Imagineering—this coaster rotates 360 degrees so you can focus on the action!