Because of the unique graviton emissions of the Wraith, a new targetable fire-and-forget weapon had to be devised to combat them. The Etheric Wake missile uses a little-known principle of subspace disturbance to track Wraith through their flight path by detecting their wash in space-time. Since the Wraith and the Polaris both use Etheric Wave hyperdrives (although the Wraith version is much more sophisticated), it has been theorized that this weapon may be more effective against Polaris jamming than standard missiles.