Heres my idea. A wormhole is opened just molecules in diameter, and then a laser or radio waves relay a signal through that wormhole to a reciever in earth orbit. While i havnt done the math i imagine this would be at a practical energy level. I can see som problems already though: 1.Wormholes might not be able to open that small. 2. A hole in space time might bend/disprupt the radio waves or laser. 3. Still needs to much energy to keep open, or to open in the first place Still if it works the benifits for interstellar missions would be huge, and any feedback on this subject is appreciated.