Real time NASA TV only 40 seconds behind, not bad at all! Update: The app only worked for the first day, then suddenly the videos only play audio(black screen), and the NASATV only plays the SAME 15 SECOND CLIP OF MISSION CONTROL OVER AND OVER AND OVER AND OVER... No realtime footage anymore. I look forward to a well functioning app in the future, at which time I will provide a new rating. It is however a novel idea.