Mauna Kea

Hawaiian volcano

Mauna Kea is a dormant volcano in the Hawaiian Islands. It is the highest point in Hawaii at 4,205 meters. If measured from top to bottom, below sea level, it is 10,200 meters high and would be the tallest mountain in the world. It is around 1,000,000 years old.[1][2] Mauna Kea means 'white mountain' because in winter it often has snow at the summit.

Mauna Kea on the Big Island of Hawaii with a light dusting of snow. Viewed from Kohala Mountain

Astronomy

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Mauna Kea is an important site for astronomy. Many different countries or institutions have an observatory there,[3] including the National Astronomical Observatory of Japan. The W. M. Keck Observatory with its 10-meter mirror is one of the most powerful in the world. Mauna Kea is an important site, especially for infrared astronomy, because of its height and clear skies.

High altitude is important because atmosphere causes an effect called seeing,[needs to be explained] which limits the quality of images by blurring them. At high altitude, there is less atmosphere between the observatories and space and this lessens the effect.

References

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  1. "Mauna Kea" (PDF). National Geographic. Archived (PDF) from the original on August 12, 2021. Retrieved October 10, 2021.
  2. "Geology and History of Mauna Kea". United States Geological Survey. November 21, 2023. Retrieved March 26, 2024.
  3. "List of Telescopes on Mauna Kea Website".