The sun sets behind telescopes on July 14, 2019, at the summit of the Big Island's Mauna Kea in Hawaii. For over 50 years, telescopes have dominated the summit of Mauna Kea, a place sacred to Native Hawaiians and one of the best places in the world to study the night sky. That's now changing with a new state law saying Mauna Kea must be protected for future generations and that science must be balanced with culture and the environment.