German physicist Harald Haas wants to reach for the stars in terms of data speeds and Internet connectivity. Or, if not the stars, at least the ceiling.

In a TEDTalk, Haas explained technology that would make it possible to send data through LED light bulbs instead of via radio waves. He calls it D-Light, or “data through illumination.”

Watch Haas’ TEDTalk below.

(h/t: GOOD)