Get crazy with your imagination: How would you cloak a planet? How would you cloak a solar system including its sun? How would you destroy an entire M-class planet without some ad hoc super powerful Death Star laser? If the Earth were situated in a star cluster with other similarly advanced civilizations, what would the primary mode of transportation be? How long would it take to get from one star to another? Would there be some sort of interstaller mass transit system? If dark energy causes the acceleration of the universe's expansion and we're in for a Big Stretch at some point in the far future, how would you counteract this force to keep your solar system together? :rant: :eek:
