The rising of Earth above the lunar horizon as seen from the Moon, especially the famous photograph taken during the Apollo 8 mission in 1968.
Compound of 'earth' (Old English eorthe) and 'rise' (Old Norse rīsa). Coined in the space age as a term parallel to 'sunrise' and 'moonrise,' specifically for Earth viewed from another celestial body.
The 'Earthrise' photograph changed human consciousness forever—seeing our entire planet as a small blue sphere over the lunar horizon made environmentalism possible and showed us we're all on the same fragile world.
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