The tiny US town of Green Bank is home to the over six-decade-old Green Bank Observatory, which requires radio silence to be able to peer deep into space to observe stars and black holes. Cell phone service is effectively barred and outsiders come seeking the shelter of that quiet. But the West Virginia town is changing: Wifi is discouraged but has become common, property values are climbing and not everyone agrees about what comes next for this seeming digital age refuge. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES