Shot over a period of three nights in April of this year, this timelapse from Sean Goebel shows the myriad telescopes at the summit of Mauna Kea in Hawaii. The clear view at 14,000 feet is the premiere location for astronomy in the Northern Hemisphere. The lasers you see are called laser guide stars and they help astronomers correct the atmospheric distortion of light by creating an artificial “star” to use as a reference point.