维基百科

File:Beta Pictoris - Comparison.jpg

原始文件 （2,891 × 1,588像素，文件大小：444 KB，MIME类型：image/jpeg）

摘要

描述
English: This is the most detailed picture to date of a large, edge-on, gas-and-dust disc encircling the 20 million year old star Beta Pictoris. It is compared with a previous image of the disc. Beta Pictoris remains the only directly imaged debris disc that has a giant planet (discovered in 2009) with an orbital period short enough (estimated to be between 18 and 22 years) that astronomers can see large motion in just a few years. This allows scientists to study how the Beta Pictoris disc is distorted by the presence of a massive planet embedded within the disc. The new visible-light Hubble image traces the disc to within about one billion kilometres of the star (which is inside the radius of Saturn's orbit about the Sun). Links: NASA Press release New view of Beta Pictoris
日期
来源 http://www.spacetelescope.org/images/opo1506a/
作者 NASA, ESA, and D. Apai and G. Schneider (University of Arizona)
其他版本
  • PNG version
    PNG version

许可协议

w:zh:知识共享
署名
署名
 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.
Conditions:
  • The full image or footage credit must be presented in a clear and readable manner to all users, with the wording unaltered (for example: "ESA/Hubble"). Web texts should be credited to ESA/Hubble (except when used by media). The credit should not be hidden or disassociated from the image footage. Links should be active if the credit is online. See the usage rights Q&A section on the ESA copyright page for guidance.
  • ESA/Hubble materials may not be used to state or imply the endorsement by ESA/Hubble or any ESA/Hubble employee of a commercial product or service.
  • ESA/Hubble requests a copy of the product sent to them to be indexed in their archive.
  • If an image shows an identifiable person, using that image for commercial purposes may infringe that person's right of privacy, and separate permission should be obtained from the individual.
  • If images or visuals are changed significantly from the original work (apart from resizing, cropping), we suggest that the changes are mentioned after the credit line. For example "Original image by ESA/Hubble (M. Kornmesser), warping and recolouring by NN".

Notes:

  • Note that this general permission does not extend to the use of ESA/Hubble's logo, which shall remain protected and may not be used or reproduced without prior and individual written consent of ESA/Hubble.
  • Also note that music, scientific papers and code on the esahubble.org site are not released under this license and can not be used for non-ESA/Hubble products.
  • By reproducing ESA/Hubble material, in part or in full, the user acknowledges the terms on which such use is permitted.
w:zh:知识共享
署名
本文件采用知识共享署名 4.0 国际许可协议授权。
署名: ESA/Hubble
您可以自由地：
  • 共享 – 复制、发行并传播本作品
  • 修改 – 改编作品
惟须遵守下列条件：
  • 署名 – 您必须对作品进行署名，提供授权条款的链接，并说明是否对原始内容进行了更改。您可以用任何合理的方式来署名，但不得以任何方式表明许可人认可您或您的使用。

说明

添加一行文字以描述该文件所表现的内容

此文件中描述的项目

描绘内容

媒体类型

image/jpeg

校验和

3b9cd9724f4d131032ec0b4888a42e5497e04625

断定方法：​SHA-1

数据大小

454,870 字节

高度

1,588 像素

宽度

2,891 像素

文件历史

点击某个日期/时间查看对应时刻的文件。

日期/时间缩⁠略⁠图大小用户备注
当前2019年12月15日 (日) 15:462019年12月15日 (日) 15:46版本的缩略图2,891 × 1,588（444 KB）BevinKaconCropped 4 % horizontally, 34 % vertically using CropTool with lossless mode. removing blank area
2019年12月15日 (日) 14:372019年12月15日 (日) 14:37版本的缩略图3,000 × 2,400（425 KB）BevinKaconactual size from source
2015年2月26日 (四) 02:032015年2月26日 (四) 02:03版本的缩略图1,280 × 1,024（91 KB）JmencisomUser created page with UploadWizard

以下页面使用本文件：

全域文件用途

以下其他wiki使用此文件：

元数据

此文件含有额外信息，这些信息可能是创建或数字化该文件时使用的数码相机或扫描仪所添加的。如果文件已从其原始状态修改，某些详细信息可能无法完全反映修改后的文件。

检索自“https://zh.wikipedia.org/wiki/File:Beta_Pictoris_-_Comparison.jpg”