THIS GUY LIVES UNDER SFO'S TAKEOFF PATH SO HE BUILT A CEILING PROJECTOR THAT TRACKS EVERY PLANE FLYING OVER HIS HOUSE IN REAL TIME he uses a cheap $30 radio receiver to pick up the signals that planes broadcast while flying. then projects them onto his ceiling in real time when a jet flies over his house you hear it outside and at the exact same moment a plane glides across his ceiling labeled with the airline, aircraft type, and destination pure black background so the projector's rectangle disappears and only the aircraft are visible but he didn't stop at planes it also draws the real sky behind them. sun, moon, bright stars, constellations, and live satellites including the ISS. all at their true positions for his exact location and time in real time so he's lying in bed watching the actual night sky projected onto his ceiling with real planes crossing through it as they take off from SFO there is a huge market for every man alive that runs outside to see the helicopter vibe coded the whole thing himself with a cheap radio, a projector, and some clever software