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Earthrise. Earthrise, taken on December 24, 1968, by Apollo 8 astronaut William Anders. Earthrise is a photograph of Earth and part of the Moon 's surface that was taken from lunar orbit by astronaut William Anders on December 24, 1968, during the Apollo 8 mission. [ 1][ 2][ 3] Nature photographer Galen Rowell described it as "the most ...
Google Earth. Google Earth is a computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering ...
NASA Earth science satellite fleet as of September 2020, planned through 2023. Earth observation satellite missions developed by the ESA as of 2019. Earth observation satellites are Earth-orbiting spacecraft with sensors used to collect imagery and measurements of the surface of the earth. These satellites are used to monitor short-term weather ...
The usual English proper name for Earth's natural satellite is simply Moon, with a capital M. [20] [21] The noun moon is derived from Old English mōna, which (like all its Germanic cognates) stems from Proto-Germanic *mēnōn, [22] which in turn comes from Proto-Indo-European *mēnsis 'month' [23] (from earlier *mēnōt, genitive *mēneses) which may be related to the verb 'measure' (of time).
The orbit of the Moon is a nearly circular ellipse about the Earth (the semimajor and semiminor axes are 384,400 km and 383,800 km, respectively: a difference of only 0.16%). The equation of the ellipse yields an eccentricity of 0.0549 and perigee and apogee distances of 362,600 km (225,300 mi) and 405,400 km (251,900 mi) respectively (a ...
Made a closest approach of 1,950 kilometres (1,210 mi) on 18 September, and circled the Moon before returning to Earth. Landed in the Indian Ocean on 21 September at 16:08 UTC, becoming the first Lunar spacecraft to be recovered successfully and carried the first Earth life to travel to and around the Moon. [64] 63: Zond 6 (7K-L1 No.12L) Zond 6
Radio communications technique. Earth–Moon–Earth communication(EME), also known as Moon bounce, is a radio communicationstechnique that relies on the propagationof radio wavesfrom an Earth-based transmitterdirected via reflectionfrom the surface of the Moonback to an Earth-based receiver. History. [edit]
What a better way to celebrate Earth Day than watching the planet from a new out-of-this-world perspective!