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

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原始檔案 ‎（3,000 × 2,400 像素，檔案大小：2.94 MB，MIME 類型：image/jpeg）

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摘要[編輯]

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
來源 NASA Image of the Day
作者 T. Pyle (SSC)
授權許可
(重用此檔案)		 NASA/JPL-Caltech/SST

授權條款[編輯]

Public domain 本作品由NASA創作，屬於公有領域。根據NASA的版權政策：“NASA的創作除非另有聲明否則不受版權保護。”（參見：Template:PD-USGov/zh，NASA版權政策或JPL圖像使用政策）
警告:
圖片審查員Taivo，確認本圖片於2018年4月27日可在下列站點找到並符合所選許可證：
NASA

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目前2006年5月19日 (五) 12:42於 2006年5月19日 (五) 12:42 版本的縮圖3,000 × 2,400（2.94 MB）WhileCrowd（留言 | 貢獻）== 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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取自「https://commons.wikimedia.org/w/index.php?title=File:Artwork_showing_a_blurred_globe_and_other_celestial_bodies,_inspired_by_the_asteroid_belt_of_HD_69830.jpg&oldid=804553023」