Earthrise


Earthrise

:"For the upcoming MMORPG see Earthrise (video game). For other uses, see Earthrise (disambiguation)."Earthrise is the name given to NASA image AS8-14-2383, taken by astronaut William Anders [ [http://www.abc.net.au/science/moon/earthrise.htm The Earthrise Photograph ] ] [http://www.nyas.org/publications/sciences/pdf/ts_11_98.pdf pages 16-18] during the historic Apollo 8 mission, the first manned voyage to the Moon. [ [http://antwrp.gsfc.nasa.gov/apod/ap051224.html APOD: 2005 December 24 - Earthrise ] ] The photograph was taken from lunar orbit on December 24, 1968; Apollo 8 did not actually land on the moon. The noted wilderness photographer Galen Rowell called it "the most influential environmental photograph ever taken." [ [http://digitaljournalist.org/issue0309/lm11.html 100 Photographs that Changed the World by Life - The Digital Journalist ] ] .

The earthrise that could be witnessed from the surface of the Moon is quite unlike sunrises on Earth. Because the Moon is tidally locked with the Earth, one side of the Moon always faces toward Earth. Naive interpretation of this fact would lead one to believe that the Earth's position is fixed on the lunar sky and no earthrises can occur. However, the Moon librates slightly, which causes the Earth to draw a Lissajous figure on the sky. This figure fits inside a rectangle 15°48' wide and 13°20' high (in angular dimensions), while the angular diameter of the Earth as seen from Moon is only about 2°. This means that earthrises are visible near the edge of the Earth-observable surface of the Moon (about 20% of the surface). Since a full libration cycle takes about 27 days, earthrises are very slow - it takes about 48 hours for Earth to clear its diameter. [cite book
last=Makowiecki
first=Piotr
title=Pomyśl zanim odpowiesz
origyear=1985
publisher=Państwowe Wydawnictwo "Wiedza Powszechna"
location=Warszawa
isbn=83-214-0419-7
language=Polish, translated from Russian
] During the course of the month-long lunar orbit, an observer would additionally witness a succession of "Earth phases", much like the lunar phases seen from Earth. That is what accounts for the half-illuminated globe seen in the photograph.

In 1969, the US Postal Service issued a stamp (Scott # 1371) commemorating the Apollo 8 flight around the moon. The stamp featured a detail of the Earthrise photograph, and the words, "In the beginning God...", recalling the Apollo 8 Genesis reading.

"Earthrise" video

On April 6, 2008 (Japan Standard Time), the first 1080p high-definition Earthrise video was captured, both a full Earthrise and Earthset video, by the JAXA lunar orbiter mission, Kaguya ("Selene"). It is currently orbiting at a lunar altitude of 100 km (62 miles), about 380,000 km (237,500 miles) from Earth. [ [http://www.jaxa.jp/press/2008/04/20080411_kaguya_e.html JAXA | KAGUYA (SELENE) Image Taking of "Full Earth-Rise" by HDTV ] ]

ee also

*Pale Blue Dot
*The Blue Marble

References


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Earthrise — Earthrise, aufgenommen am 24. Dezember 1968 Earthrise (dt.: Erdaufgang) ist der Name des NASA Fotos AS8 14 2383HR, aufgenommen von William Anders[1] während des Fluges von Apollo 8. Das Bild wurde am 24. Dezember 1968 während der vierten… …   Deutsch Wikipedia

  • earthrise — [ʉrth′rīz΄] n. the rising of the upper limb of the earth above the horizon of the moon, as seen from the moon …   English World dictionary

  • Earthrise — Lever de Terre Earthrise , le 24 décembre 1968. Photographie prise depuis le module d Apollo 8. Lever de Terre ( Earthrise en anglais) est le nom donné à la photographie de la NASA AS8 14 2383HR prise par William Anders …   Wikipédia en Français

  • Earthrise — Уильям Андерс Восход Земли, 1968 Earthrise …   Википедия

  • earthrise — noun Date: 1968 the rising of the earth above the horizon of the moon as seen from lunar orbit …   New Collegiate Dictionary

  • earthrise — /errth ruyz /, n. Astron. the rising of the earth above the horizon of the moon or other celestial body, viewed from that body s surface or from a spacecraft orbiting it. [1965 70; EARTH + (SUN)RISE] * * * …   Universalium

  • earthrise — noun a) The time of day when the Earth begins to rise over the horizon of another planet according to a local observer. b) The irregular event of the Earth appearing above the horizon of the moon. See Also: moonrise, sunrise …   Wiktionary

  • earthrise — n. rising of earth above the horizon of the moon as seen from the moon s surface or from a spacecraft orbiting the moon …   English contemporary dictionary

  • earthrise — earth•rise [[t]ˈɜrθˌraɪz[/t]] n. astron. the rising of the earth above the horizon of the moon or other celestial body • Etymology: 1965–70 …   From formal English to slang

  • earthrise — ˈ ̷ ̷ ˌ ̷ ̷ noun : the rising of the earth above the horizon of the moon as seen from lunar orbit * * * /errth ruyz /, n. Astron. the rising of the earth above the horizon of the moon or other celestial body, viewed from that body s surface or… …   Useful english dictionary