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Figura:Einstein cross.jpg

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The European Space Agency's Faint Object Camera on board NASA's Hubble Space Telescope has provided astronomers with the most detailed image ever taken of the gravitational lens G2237 + 0305 — sometimes referred to as the Einstein Cross. The photograph shows four images of a very distant quasar which has been multiple-imaged by a relatively nearby galaxy acting as a gravitational lens. The angular separation between the upper and lower images is 1.6 arcseconds.

العربية: تقاطع أينشتاين: أربع صور لنفس النجم الزائف البعيد (وذلك بفعل عدسة الجاذبية الناتجة عن المجرة الأقرب لنا، والظاهرة في المقدمة، وهي مجرة عدسة هاكرا).
Data
Sorgiss http://hubblesite.org/newscenter/archive/releases/1990/20/image/a/
Autor NASA, ESA, and STScI
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(Riusagi ëd cost archivi)
Public domain This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

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Description from other version: An Einstein Cross reveals the presence of a huge gravitational lens in the distant reaches of the universe. Astronomers discovered this gravitational lens in 1985 using survey maps of the sky obtained with the Hubble Space Telescope (HST). The bright object at the center of the image is a distant galaxy. The four bright objects surrounding it are actually multiple images of a single quasar that lies far beyond the galaxy. The lens was named the Einstein Cross in honor of Albert Einstein, whose relativity theory predicted the phenomena decades before the first gravitational lens was observed in 1979.

Image extraction processDa questo file è stata ricavata un'immagine ritagliata: Einstein cross (cropped).jpg.
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This picture shows gravitational lens G2237 + 0305 — sometimes referred to as the Einstein Cross. It shows four images of a very distant quasar which has been multiple-imaged by a relatively nearby galaxy acting as a gravitational lens.

Elementi ritratti in questo file

raffigura italiano

data di fondazione o creazione italiano

13 stè 1990

tipo di file italiano

image/jpeg

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Data e OraMiniaduraAmzureUtentComent
dël dì d'ancheuj09:39, 15 Dze 2010Miniadura dla version ëd 09:39, 15 Dze 20101 915 × 1 849 (707 KByte)TryphonReverted to version as of 17:16, 26 January 2010: no need to compress it too much.
09:10, 15 Dze 2010Miniadura dla version ëd 09:10, 15 Dze 20101 914 × 1 848 (205 KByte)MaterialscientistJPG compression
19:16, 26 gen 2010Miniadura dla version ëd 19:16, 26 gen 20101 915 × 1 849 (707 KByte)TryphonCropped from http://imgsrc.hubblesite.org/hu/db/images/hs-1990-20-a-full_tif.tif.
19:11, 26 gen 2010Miniadura dla version ëd 19:11, 26 gen 20102 457 × 2 277 (353 KByte)TryphonHigher resolution, from http://imgsrc.hubblesite.org/hu/db/images/hs-1990-20-a-full_jpg.jpg.
10:40, 13 giu 2007Miniadura dla version ëd 10:40, 13 giu 2007300 × 278 (12 KByte)Markus PösselImage taken by Hubble Space Telescope; description at http://hubblesite.org/newscenter/archive/releases/1990/20/image/a/ Credit: NASA and ESA {{PD-Hubble}}

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