Super Dimension Century Orguss

Fighter pilot Kei Katsuragi and his friend Orson go on a mission to escort the deployment of a new space/time oscillation bomb inside enemy territory. Something goes wrong, making the bomb explode and scrambling time, space and different dimensions. Now in a completely alien and unfamiliar environment, Kei meets the Emarn, a group of technologically advanced gypsy traders, and begins his search for a way to restore time and space.

Synopsis from Anime News Network