Mauna Kea Observatories
LocationUSA (Hawaii)
Year1968
SizeVarious
OperatorInternational
About Mauna Kea Observatories
13 telescopes on the summit at 4,205 m. The largest astronomical observatory in the world. The altitude places telescopes above 40% of the atmosphere. Sacred to Native Hawaiians, leading to telescope controversies. Exceptional viewing conditions year-round.