That very well may be acceptable.No insider information just cobbling together different rumors and such. We're welcomed to the Xandarian outpost and they teach us about how their technology has allowed for a green/energy sustainable society. A field trip is arranged for us to visit Xandar and see their progress first hand. We board our vehicles to wormhole jump across the galaxy but something goes wrong and we end up launching backwards and jumping back in time. We see the origins of the xandar/the universe/big energy explosions while listening to 70's pop rock before somehow slingshotting ourselves back to the present day. Probably some conclusion scene where they say, whoops that got out of hand but hey you learned a few things about science/energy.