File:Artwork showing a blurred globe and other celestial bodies, inspired by the asteroid belt of HD 69830.jpg

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原始文件(3,000 × 2,400像素,文件大小:2.94 MB,MIME类型:image/jpeg


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描述
English: Artwork inspired by the detection of a debris belt around HD 69830 which led to the hypothesis of an asteroid belt being there. This is an obselete hypothetical image suggesting a planet beyond a debris disc. This image was created in 2005 and does not represent HD 69830 d which was not discovered until 2006. The picture is not suited as a scientific illustration, as it is erroneous in following ways (besides others):
  • To show a planet blurred before a sharp background on a photographic picture, the size of the lens had to be comparable to the planet.
  • The symmetry axis of a crescent has to point to the object causing the illumination, i.e. the star.
  • If the shown rocks were farther away than the planet they would have diameters of at least some hundred kilometers. There is no model which allows that many such bodies to be seen simultaneously in a view angle which the artwork pretends.
日期
来源 NASA Image of the Day
作者 T. Pyle (SSC)
授权
(二次使用本文件)
NASA/JPL-Caltech/SST

许可协议

Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
警告:
管理员受信用户Taivo确认本图片在2018年4月27日可在下列站点找到并符合所选许可证:
NASA

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T. Pyle (SSC)

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当前2006年5月19日 (五) 12:422006年5月19日 (五) 12:42版本的缩略图3,000 × 2,400(2.94 MB)WhileCrowd== Summary == {{Imginfo | description = Possible planet of w:HD 69830 | source = http://www.spitzer.caltech.edu/Media/releases/ssc2005-10/ssc2005-10c.shtml | date = April 20, 2005 | credit = NASA/JPL-Caltech/SST | author = T. Pyle (SSC) }} ==Licens

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