File:PIA19354-CometLovejoy-20150130.jpg
維基百科,自由的 encyclopedia
![File:PIA19354-CometLovejoy-20150130.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/2/23/PIA19354-CometLovejoy-20150130.jpg/600px-PIA19354-CometLovejoy-20150130.jpg)
原始文件 (1,799 × 1,799像素,文件大小:147 KB,MIME类型:image/jpeg)
摘要
描述PIA19354-CometLovejoy-20150130.jpg |
English: PIA19354: NEOWISE Wise to Comet Lovejoy
http://photojournal.jpl.nasa.gov/catalog/PIA19354 http://www.jpl.nasa.gov/news/news.php?feature=4524 The NEOWISE spacecraft viewed comet C/2014 Q2 (Lovejoy) for a second time on January 30, 2015, as the comet passed through the closest point to our sun along its 14,000-year orbit, at a solar distance of 120 million miles (193 million kilometers). NEOWISE imaged the comet more than 20 times through its perihelion passage in late January 2015, from a distance of 70 million miles (112 million kilometers). NEOWISE's first images of the comet were taken in November 2014, when the comet was nearly a third farther than its closest distance from the sun. In this image refinement of eight exposures, north is down and slightly right, and east is to the right and slightly up. The blue tail, composed mostly of ionized particles and small dust, extends in the anti-sunward direction, while the comet's path across the sky is mostly down and to the left in this image. The frame is half a degree on the sky, or about 62,000 miles (100,000 kilometers) at the comet. Color in this image corresponds to specific infrared wavelengths. Blue represents light emitted at 3.4-micron wavelengths, while orange represents 4.6-micron light. Comet Lovejoy was the brightest comet in Earth's sky in early 2015. A chart of its location in the sky during dates in January 2015 is at PIA19103 .For more information about NEOWISE (the Near-Earth Object Wide-field Survey Explorer), see http://neowise.ipac.caltech.edu. NASA's Jet Propulsion Laboratory manages the NEOWISE mission for NASA's Science Mission Directorate in Washington. The Space Dynamics Laboratory in Logan, Utah, built the science instrument. Ball Aerospace & Technologies Corp. of Boulder, Colo., built the spacecraft. Science operations and data processing take place at the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena. Caltech manages JPL for NASA. |
日期 | |
来源 | http://photojournal.jpl.nasa.gov/jpeg/PIA19354.jpg |
作者 | NASA/JPL-Caltech |
![]() |
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
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:
|
说明
此文件中描述的项目
描繪內容
30 1 2015
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 | 2015年3月26日 (四) 18:18 | ![]() | 1,799 × 1,799(147 KB) | Drbogdan | 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:
- en.wikipedia.org上的用途
- ms.wikipedia.org上的用途
- uk.wikipedia.org上的用途
- zh-min-nan.wikipedia.org上的用途