You can block out light, but you can't regain the sky that way. Sound attenuates much faster. If you live in the SF bay area and want to spend some time witho

You can block out light, but you can't regain the sky that way. Sound attenuates much faster. If you live in the SF bay area and want to spend some time without sound pollution you can do so easily. Many of our open space preserves are noted for their level of quiet. I chose where I live partially on the basis that it's extremely quiet. If you would like to experience an extremely dark sky, however, you'll have to drive several hours and much of the US can't even get to one in several hours.