File:A_Horseshoe_Einstein_Ring_from_Hubble.JPG
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摘要
描述A Horseshoe Einstein Ring from Hubble.JPG |
English: What's large and blue and can wrap itself around an entire galaxy? A gravitational lens mirage. Pictured above, the gravity of a luminous red galaxy (LRG) has gravitationally distorted the light from a much more distant blue galaxy. More typically, such light bending results in two discernible images of the distant galaxy, but here the lens alignment is so precise that the background galaxy is distorted into a horseshoe -- a nearly complete ring. Since such a lensing effect was generally predicted in some detail by Albert Einstein over 70 years ago, rings like this are now known as Einstein Rings. Although LRG 3-757 was discovered in 2007 in data from the Sloan Digital Sky Survey (SDSS), the image shown above is a follow-up observation taken with the Hubble Space Telescope's Wide Field Camera 3. Strong gravitational lenses like LRG 3-757 are more than oddities -- their multiple properties allow astronomers to determine the mass and dark matter content of the foreground galaxy lenses. (citation from APOD) |
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這是一張修飾過的圖片,即本圖片是用軟體修改過後的版本,修改的方式或內容有:Cropped。原版圖片來源:Lensshoe hubble.jpg。修改者:Bulwersator。
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原始上傳日誌
This image is a derivative work of the following images:
- File:Lensshoe_hubble.jpg licensed with PD-USGov-NASA
- 2011-12-21T11:34:12Z Bulwersator 3235x2572 (5228638 Bytes) {{Information |Description ={{en|1=What's large and blue and can wrap itself around an entire galaxy? A gravitational lens mirage. Pictured above, the gravity of a luminous red galaxy (LRG) has gravitationally distorted th
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說明
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Image of LRG 3-757, an example of a galaxy's light distorted by gravitational lensing
La astronomía
多媒體型式 繁體中文 (已轉換拼寫)
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1,014 像素
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目前 | 2011年12月21日 (三) 11:35 | 1,014 × 670(109 KB) | Bulwersator | == {{int:filedesc}} == {{Information |Description={{en|1=What's large and blue and can wrap itself around an entire galaxy? A gravitational lens mirage. Pictured above, the gravity of a luminous red galaxy (LRG) has gravitationally distorted the light fro |
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