The W. M. Keck Observatory on Mauna Kea, Hawaii. (credit: JPL NASA) – click to enlarge
The W. M. Keck Observatory on Mauna Kea, Hawaii.
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The W. M. Keck Observatory on Mauna Kea, Hawaii. (credit: JPL NASA) – click to enlarge
The W. M. Keck Observatory on Mauna Kea, Hawaii.