跳转到内容

File:Vulcanic Explosion on Io.jpg

页面内容不支持其他语言。
這個文件來自維基共享資源
维基百科,自由的百科全书

Vulcanic_Explosion_on_Io.jpg (600 × 460像素,文件大小:239 KB,MIME类型:image/jpeg


摘要

Original Caption Released with Image:
VOLCANIC EXPLOSION ON IO: Voyager 1 acquired this image of Io on March 4 at 5:30 p.m. (PST) about 11 hours before closest approach to the Jupiter moon. The distance to Io was about 490,000 kilometers (304,000 miles). An enormous volcanic explosion can be seen silhouetted against dark space over Io's bright limb. The brightness of the plume has been increased by the computer as it is normally extremely faint, whereas the relative color of the plume (greenish white) has been preserved. At this time solid material had been thrown up to an altitude of about 100 miles. This requires an ejection velocity from the volcanic vent of about 1200 miles per hour, material reaching the crest of the fountain in several minutes. The vent area is a complex circular structure consisting of a bright ring about 300 kilometers in diameter and a central region of irregular dark and light patterns. Volcanic explosions similar to this occur on the Earth when magmatic gases expand explosively as material is vented. On Earth water is the major gas driving the explosion. Because Io is thought to be extremely dry, scientists are searching for other gases to explain the explosion. JPL manages and controls the Voyager Project for NASA's Office of Space Science.

source:http://photojournal.jpl.nasa.gov/catalog/?IDNumber=PIA01971

TIFF verion:http://photojournal.jpl.nasa.gov/tiff/PIA01971.tif

本图像或视频收录于美国国家航空航天局 (NASA)喷气推进实验室(Jet Propulsion Laboratory),其照片编号是: PIA01971

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:

许可协议

Public domain 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/zhNASA版权方针页面JPL图片使用方针。)
警告:

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

描繪內容

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1月4日 (五) 09:442019年1月4日 (五) 09:44版本的缩略图600 × 460(239 KB)Kesäperuna100% JPEG quality from full quality TIFF.
2007年2月16日 (五) 13:152007年2月16日 (五) 13:15版本的缩略图600 × 460(35 KB)Uwe W.'''Original Caption Released with Image:''' VOLCANIC EXPLOSION ON IO: Voyager 1 acquired this image of Io on March 4 at 5:30 p.m. (PST) about 11 hours before closest approach to the Jupiter moon. The distance to Io was about 490,000 kilometers (304,000 m

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: