Dosya:NGC3156 - Measure of a great galactic disc (potw2337a).jpg
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ŞınasnayışNGC3156 - Measure of a great galactic disc (potw2337a).jpg |
English: This dream-like Picture of the Week features the galaxy known as NGC 3156. It is a lenticular galaxy, meaning that it falls somewhere between an elliptical and a spiral galaxy. It lies about 73 million light-years from Earth, in the minor equatorial constellation Sextans. Sextans is a small constellation that belongs to the Hercules family of constellations. It itself is a constellation with an astronomical theme, being named for the instrument known as the sextant. Sextants are often thought of as navigational instruments that were invented in the 18th century. However, the sextant as an astronomical tool has been around for much longer than that: Islamic scholars developed astronomical sextants many hundreds of years earlier in order to measure angles in the sky. A particularly striking example is the enormous sextant with a radius of 36 metres that was developed by Ulugh Beg of the Timurid dynasty in the fifteenth century, located in Samarkand in present-day Uzbekistan. These early sextants may have been a development of the quadrant, a measuring device proposed by Ptolemy. A sextant, as the name suggests, is shaped like one-sixth of a circle, approximately the shape of the constellation.Sextants are no longer in use in modern astronomy, having been replaced by instruments that are capable of measuring the positions of stars and astronomical objects much more accurately and precisely. NGC 3156 has been studied in many ways other than determining its precise position — from its cohort of globular clusters, to its relatively recent star formation, to the stars that are being destroyed by the supermassive black hole at its centre.[Image Description: A large elliptical galaxy. It appears to be formed of faint, grey, concentric ovals that grow progressively brighter towards the core, where there is a very bright point, and fade away at the edge. Two threads of dark red dust cross the galaxy’s disc, near the centre. The background is black and mostly empty, with only a few point stars and small galaxies.] |
Tarix | 11 Keşkelun 2023 (upload date) |
Çıme | Measure of a great galactic disc |
Nuştekar | ESA/Hubble & NASA, R. Sharples, S. Kaviraj, W. Keel |
Versiyonane binan |
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Lisans
ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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Gırêdayış: ESA/Hubble
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Items portrayed in this file
Dewrê mocnayışi
Hubble Space Telescope English
copyrighted English
media type English
image/jpeg
3,652 pixel
3,772 pixel
data size English
3,075,463 byte
checksum English
f445ff3bb9a94bf8a7582128b780e47ae99eaeb6
11 Keşkelun 2023
pHash checksum English
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Verêniya dosya
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Tarix/Zeman | Resımo qıckek | Ebadi | Karber | Mışewre | |
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nıkayên | 09:01, 11 Keşkelun 2023 | 3,772 - 3,652 (2.93 MB) | OptimusPrimeBot | #Spacemedia - Upload of https://cdn.spacetelescope.org/archives/images/large/potw2337a.jpg via Commons:Spacemedia |
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Metadata
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Çıme | ESA/Hubble |
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Kredi/Destegdaren | ESA/Hubble & NASA, R. Sharples, S. Kaviraj, W. Keel |
Sernuşteyo qıckek |
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Image title |
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Şertê karkerdışi |
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Date and time of data generation | 06:00, 11 Keşkelun 2023 |
Karenaye nusnerek | Adobe Photoshop 24.4 (Windows) |
File change date and time | 12:38, 7 Keşkelun 2023 |
Demê dijitalkerdışi | 11:43, 16 Hezirane 2023 |
Malumatê metamalumati peyd timarya | 14:38, 7 Keşkelun 2023 |
Xasiya ID ya dokuman de orcinali | xmp.did:3659db32-c332-b04e-aeee-5b91b1986548 |
Çekuyên kıliti | NGC 3156 |
Melumatê irtıbati |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
Verqaydê IIM | 4 |