File:PIA01130 Interior of Europa.jpg
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Summary
- Interior of Europa
- original description: Cutaway view of the possible internal structure of Europa The surface of the satellite is a mosaic of images obtained in 1979 by NASA's Voyager spacecraft. The interior characteristics are inferred from gravity field and magnetic field measurements by NASA's Galileo spacecraft. Europa's radius is 1565 km, not too much smaller than our Moon's radius. Europa has a metallic (iron, nickel) core (shown in gray) drawn to the correct relative size. The core is surrounded by a rock shell (shown in brown). The rock layer of Europa (drawn to correct relative scale) is in turn surrounded by a shell of water in ice or liquid form (shown in blue and white and drawn to the correct relative scale). The surface layer of Europa is shown as white to indicate that it may differ from the underlying layers. Galileo images of Europa suggest that a liquid water ocean might now underlie a surface ice layer several to ten kilometers thick. However, this evidence is also consistent with the existence of a liquid water ocean in the past. It is not certain if there is a liquid water ocean on Europa at present.
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:10, 3 January 2017 | 2,666 × 2,000 (528 KB) | 127.0.0.1 (talk) | <ul> <li> <b>Interior of Europa</b> </li> <li>original description: Cutaway view of the possible internal structure of Europa The surface of the satellite is a mosaic of images obtained in 1979 by NASA's Voyager spacecraft. The interior characteristics are inferred from gravity field and magnetic field measurements by NASA's Galileo spacecraft. Europa's radius is 1565 km, not too much smaller than our Moon's radius. Europa has a metallic (iron, nickel) core (shown in gray) drawn to the correct relative size. The core is surrounded by a rock shell (shown in brown). The rock layer of Europa (drawn to correct relative scale) is in turn surrounded by a shell of water in ice or liquid form (shown in blue and white and drawn to the correct relative scale). The surface layer of Europa is shown as white to indicate that it may differ from the underlying layers. Galileo images of Europa suggest that a liquid water ocean might now underlie a surface ice layer several to ten kilometers thick. However, this evidence is also consistent with the existence of a liquid water ocean in the past. It is not certain if there is a liquid water ocean on Europa at present.</li> </ul> |
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- Aeolis Palus
- Aeolis quadrangle
- Allan Hills 84001
- Arecibo message
- Astrobiology
- Astrobiology Field Laboratory
- Astrobiology Science and Technology for Exploring Planets
- BIOPAN
- Beagle 2
- Biosatellite program
- Biosignature
- Breakthrough Listen
- Curiosity (rover)
- DEPTHX
- Enceladus Explorer
- Enceladus Life Finder
- Europa (moon)
- Europa Multiple-Flyby Mission
- ExoMars
- Exoplanet
- Extraterrestrial life
- Extremophile
- Frank Drake
- Gale (crater)
- Galilean moons
- Gliese 667 Cc
- Glycolaldehyde
- Hypothetical types of biochemistry
- Icebreaker Life
- Icy moon
- Jezero (crater)
- Journey to Enceladus and Titan
- Kapteyn b
- Kepler-186f
- Kepler-296e
- Kepler-296f
- Kepler-438b
- Kepler-440b
- Kepler-442b
- Kepler-444
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- Kepler-62
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- Kepler-69
- Life
- Life Investigation For Enceladus
- Life on Mars
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- Mars 2020
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- Nexus for Exoplanet System Science
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- Portal:Biology/Biology portals
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- Timeline of Mars Science Laboratory
- Viking program
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- Wolf 1061c
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- Portal:Biology
- Portal:Biology/Biology portals