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The natural world. Looking pretty for 3.5b years.

Earth's Geocorona

Earth's Geocorona

Author: Hugh Bollinger/Monday, January 22, 2018/Categories: natural history, photography, space science, art and design, environment, adventure

The Earth's full geocorona has been imaged for the first time by the Lyman Alpha Imaging Camera carried by Japan's PROCYRON spacecraft. According to the American Geophysical Union (AGU):

"the image shows the outermost layer of Earth’s atmosphere, the outer exosphere, that is almost entirely made up of hydrogen. The hydrogen atoms scatter photons, producing a luminous halo called the geocorona. Observing the geocorona will shed light on the last phase of an important process: the escape of hydrogen atoms from Earth into interplanetary space."

The geocorona was imaged from over 9,300,000 miles distant (~15 million kilometers) and shows for the the entire luminous halo stretching early nearly 150,000 miles (~240,000 kilometers) from the Earth. Since the Apollo missions of the 1970's there has been a goal to capture a photograph of the outermost reaches of Earth’s atmosphere. The photo also likely shows the final extent of the Earth's prime ingredient of life, water, which has been separated into its hydorgen and oxygen atoms by the solar wind constantly hitting the top of the atmosphere.



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