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File:EuropaInterior1.jpg

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原始檔案 ‎（1,192 × 1,636 像素，檔案大小：696 KB，MIME 類型：image/jpeg）

摘要

描述

Model of Europa's subsurface structure. Original caption released with image: These artist's drawings depict two proposed models of the subsurface structure of the Jovian moon, Europa. Geologic features on the surface, imaged by the Solid State Imaging (SSI) system on NASA's Galileo spacecraft might be explained either by the existence of a warm, convecting ice layer, located several kilometers below a cold, brittle surface ice crust (top model), or by a layer of liquid water with a possible depth of more than 100 kilometers(bottom model). If a 100 kilometer (60 mile) deep ocean existed below a 15 kilometer (10 mile) thick Europan ice crust, it would be 10 times deeper than any ocean on Earth and would contain twice as much water as Earth's oceans and rivers combined. Unlike the Earth, magnesium sulfate might be a major salt component of Europa's water or ice, while the Earth's oceans are salty due to sodium chloride (common salt).

While data from various instruments on the Galileo spacecraft indicate that an Europan ocean might exist, no conclusive proof has yet been found. To date Earth is the only known place in the solar system where large masses of liquid water are located close to a solid surface. Other sources are especially interesting since water is a key ingredient for the development of life as we know it.
日期


(Original text: 1999-01-18)
來源

Transferred from en.wikipedia to Commons. Transfer was stated to be made by User:Mu301.
(Original text : NASA's Planetary Photojournal, PIA01669:

作者 NASA/JPL
其他版本 Derivative works of this file:  EuropaInterior1 cs.jpg
本圖像或影音收錄於美國國家航空暨太空總署 （NASA）噴射推進實驗室（Jet Propulsion Laboratory），其照片編號為： PIA01669

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Public domain 本作品由NASA創作，屬於公有領域。根據NASA的版權政策：“NASA的創作除非另有聲明否則不受版權保護。”（參見：Template:PD-USGov/zh，NASA版權政策或JPL圖像使用政策）
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原始上傳日誌

The original description page was here. All following user names refer to en.wikipedia.
  • 2007-03-13 14:48 RP88 1192×1636×8 (174008 bytes) higher resolution
  • 2007-02-23 23:24 Latitude0116 492×676×8 (42637 bytes) Diagram showing Europa's interior (source: [http://photojournal.jpl.nasa.gov/catalog/PIA01669]) {{NASA}}

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日期/時間縮⁠圖尺寸用戶備⁠註
目前2019年2月7日 (四) 19:23於 2019年2月7日 (四) 19:23 版本的縮圖1,192 × 1,636（696 KB）Kesäperuna100% JPEG quality from full quality TIFF.
2007年12月15日 (六) 02:13於 2007年12月15日 (六) 02:13 版本的縮圖1,192 × 1,636（170 KB）Mu301{{Information |Description={{en|Model of Europa's subsurface structure.<br/> ==== Original caption released with image ==== These artist's drawings depict two proposed models of the subsurface structure of the Jovian moon, Europa. Geologic
2007年12月15日 (六) 01:47於 2007年12月15日 (六) 01:47 版本的縮圖1,192 × 1,636（170 KB）Mu301== Summary == {{Information | Description = Model of Europa's subsurface structure. | Source = NASA's [http://photojournal.jpl.nasa.gov/index.html Planetary Photojournal], PIA01669: * Source URL: http://photojournal.jpl.nasa.gov/jpe

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