This mesmerizing time-lapse from the western United States is the perfect reminder to look up at the sky tonight http://on.natgeo.com/2yu9ZDw

This mesmerizing time-lapse from the western United States is the perfect reminder to look up at the sky tonight http://on.natgeo.com/2yu9ZDw 

https://twitter.com/NatGeoTravel/status/913221767547768832