File:Alpha Centauri AB over limb of Saturn PIA10406.jpg
![File:Alpha Centauri AB over limb of Saturn PIA10406.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Alpha_Centauri_AB_over_limb_of_Saturn_PIA10406.jpg/800px-Alpha_Centauri_AB_over_limb_of_Saturn_PIA10406.jpg?20190426142020)
原始文件 (1,017 × 477像素,文件大小:84 KB,MIME类型:image/jpeg)
说明
说明
摘要
[编辑]描述Alpha Centauri AB over limb of Saturn PIA10406.jpg |
English: Original Caption Released with Image:
The nearest star system, the trinary star Alpha Centauri, hangs above the horizon of Saturn. Both Alpha Centauri A and B—stars very similar to our own—are clearly distinguishable in this image. (The third star in the Alpha Centauri system, the red dwarf Proxima Centauri, is not visible here.) From the orbit of Saturn, light (as well as Cassini's radio signal) takes a little more than an hour travel to Earth. The distance to Alpha Centauri is so great that light from these stars takes more than four years to reach our Solar System. Thus, although Saturn seems a distant frontier, the nearest star is almost 30,000 times farther away. This image is part of a stellar occultation sequence, during which Cassini watches as a star (or stars) as it passes behind Saturn. Light from the stars is attenuated by the uppermost reaches of Saturn's gaseous envelope, revealing information about the structure and composition of the planet's atmosphere. The view was captured from about 66 degrees above the ringplane and faces southward on Saturn. Ring shadows mask the planet's northern latitudes at bottom. The image was taken in visible red light with the Cassini spacecraft narrow-angle camera on May 17, 2008. The view was obtained at a distance of approximately 534,000 kilometers (332,000 miles) from Saturn. Image scale on Saturn is about 3 kilometers (2 miles) per pixel. |
日期 | |
来源 |
http://photojournal.jpl.nasa.gov/catalog/PIA10406 |
作者 | NASA/JPL/Space Science Institute |
![]() |
此标签不表示文件的著作权状态。任何文件在附有此标签的同時还需要一个有效的著作权标签。请参阅许可协议说明页面以了解更多信息。 其他语言:
العربية ∙ беларуская (тарашкевіца) ∙ български ∙ català ∙ čeština ∙ dansk ∙ Deutsch ∙ English ∙ español ∙ فارسی ∙ français ∙ galego ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ polski ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/− |
许可协议
[编辑]Public domainPublic domainfalsefalse |
![]() |
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/zh、NASA版权方针页面或JPL图片使用方针。) | ![]() |
![]() |
警告:
|
原始上传日志
[编辑]- 2008-06-20 12:31 Kwamikagami 1017×477×8 (17057 bytes) {{Information |Description= Original Caption Released with Image: The nearest star system, the trinary star Alpha Centauri, hangs above the horizon of Saturn. Both Alpha Centauri A and B—stars very similar to our own—are clearly distinguishable in th
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4月26日 (五) 14:20 | ![]() | 1,017 × 477(84 KB) | FriedrichKieferer(留言 | 贡献) | Better quality. |
2008年6月20日 (五) 16:09 | ![]() | 1,017 × 477(17 KB) | FrancescoA(留言 | 贡献) | {{Information |Description={{en|Original Caption Released with Image: The nearest star system, the trinary star Alpha Centauri, hangs above the horizon of Saturn. Both Alpha Centauri A and B—stars very similar to our own—are clearly distinguishable in |
您不可以覆盖此文件。
文件用途
全域文件用途
以下其他wiki使用此文件:
- ar.wikipedia.org上的用途
- ca.wikipedia.org上的用途
- cs.wikipedia.org上的用途
- de.wikipedia.org上的用途
- es.wikipedia.org上的用途
- eu.wikipedia.org上的用途
- gl.wikipedia.org上的用途
- it.wikipedia.org上的用途
- ka.wikipedia.org上的用途
- sl.wikipedia.org上的用途
- tr.wikipedia.org上的用途
- vi.wikipedia.org上的用途
- zh.wikipedia.org上的用途