File:NGC 6753 by Hubble Space Telescope.jpg
原始文件 (1,103 × 1,101像素,文件大小:467 KB,MIME类型:image/jpeg)
摘要
描述NGC 6753 by Hubble Space Telescope.jpg |
English: Despite the advances made in past decades, the process of galaxy formation remains an open question in astronomy. Various theories have been suggested, but since galaxies come in all shapes and sizes — including elliptical, spiral, and irregular — no single theory has so far been able to satisfactorily explain the origins of all the galaxies we see throughout the Universe.
To determine which formation model is correct (if any), astronomers hunt for the telltale signs of various physical processes. One example of this is galactic coronas, which are huge, invisible regions of hot gas that surround a galaxy’s visible bulk, forming a spheroidal shape. They are so hot that they can be detected by their X-ray emission, far beyond the optical radius of the galaxy. Because they are so wispy, these coronas are extremely difficult to detect. In 2013, astronomers highlighted NGC 6753, imaged here by the NASA/ESA Hubble Space Telescope, as one of only two known spiral galaxies that were both massive enough and close enough to permit detailed observations of their coronas. Of course, NGC 6753 is only close in astronomical terms — the galaxy is nearly 150 million light-years from Earth. NGC 6753 is a whirl of colour in this image — the bursts of blue throughout the spiral arms are regions filled with young stars glowing brightly in ultraviolet light, while redder areas are filled with older stars emitting in the cooler near-infrared. |
日期 | |
来源 | https://www.spacetelescope.org/images/potw1738a/ |
作者 |
ESA/Hubble & NASA Acknowledgement: Judy Schmidt |
许可协议
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:
Notes:
|
此文件中描述的项目
描繪內容
18 9 2017
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 | 2017年9月18日 (一) 08:50 | 1,103 × 1,101(467 KB) | Jmencisom | User created page with UploadWizard |
文件用途
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:
- ar.wikipedia.org上的用途
- arz.wikipedia.org上的用途
- be-tarask.wikipedia.org上的用途
- be.wikipedia.org上的用途
- ce.wikipedia.org上的用途
- diq.wikipedia.org上的用途
- el.wikipedia.org上的用途
- en.wikipedia.org上的用途
- eo.wikipedia.org上的用途
- eu.wikipedia.org上的用途
- fa.wikipedia.org上的用途
- mk.wikipedia.org上的用途
- nl.wikipedia.org上的用途
- pl.wikipedia.org上的用途
- ru.wikipedia.org上的用途
- sk.wikipedia.org上的用途
- tt.wikipedia.org上的用途
- uk.wikipedia.org上的用途
- www.wikidata.org上的用途
元数据
此文件中包含有扩展的信息。这些信息可能是由数码相机或扫描仪在创建或数字化过程中所添加。
如果此文件的源文件已经被修改,一些信息在修改后的文件中将不能完全反映出来。
提供者 | ESA/Hubble & NASAAcknowledgement: Judy Schmidt |
---|---|
来源 | ESA/Hubble |
简短标题 |
|
图像标题 |
|
使用条款 |
|
数据生成日期时间 | 2017年9月18日 (一) 06:00 |
使用软件 | Adobe Photoshop CC 2017 (Windows) |
文件修改日期时间 | 2017年6月9日 (五) 14:02 |
数字化日期时间 | 2017年2月27日 (一) 19:01 |
元数据最后修改日期 | 2017年6月9日 (五) 16:02 |
原始文件唯一ID | xmp.did:90d280c8-d0a9-614e-9989-d9b8b3e939bd |
关键词 | NGC 6753 |
联系信息 |
-{R|http://www.spacetelescope.org}- Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
IIM版本 | 4 |