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Earth's geocorona from the Moon

Earth's geocorona from the Moon


Date: 19 February 2019
Depicts: Earth
Copyright: NASA

The Earth and its hydrogen envelope, or geocorona, as seen from the Moon. This ultraviolet picture was taken in 1972 with a camera operated by Apollo 16 astronauts on the Moon.

A recent discovery based on observations by the ESA/NASA Solar and Heliospheric Observatory, SOHO, shows that the geocorona extends well beyond the orbit of the Moon, reaching up to 630 000 km above Earth's surface, or 50 times the diameter of our planet.

Last Update: 1 September 2019
20-Nov-2019 09:17 UT

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