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Europa's Differentiated Internal Structure: Inferences from Four Galileo Encounters
Abstract
Radio Doppler data from four encounters of the Galileo spacecraft with the jovian moon Europa have been used to refine models of Europa's interior. Europa is most likely differentiated into a metallic core surrounded by a rock mantle and a water ice-liquid outer shell, but the data cannot eliminate the possibility of a uniform mixture of dense silicate and metal beneath the water ice-liquid shell. The size of a metallic core is uncertain because of its unknown composition, but it could be as large as about 50 percent of Europa's radius. The thickness of Europa's outer shell of water ice-liquid must lie in the range of about 80 to 170 kilometers.
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Cited by
Ceres: Evolution and current state
McCord, T. B., & Sotin, C. (2005) · Journal of Geophysical Research: Planets · doi:10.1029/2004je002244 · Cited by 272
SALTS AND RADIATION PRODUCTS ON THE SURFACE OF EUROPA
Brown, M. E., & Hand, K. P. (2013) · The Astronomical Journal · doi:10.1088/0004-6256/145/4/110 · Cited by 213
Conditions for the onset of plate tectonics on terrestrial planets and moons
O'Neill, C., Jellinek, A. M., & Lenardic, A. (2007) · Earth and Planetary Science Letters · doi:10.1016/j.epsl.2007.05.038 · Cited by 153
Russell, M. J., Murray, A. E., & Hand, K. P. (2017) · Astrobiology · doi:10.1089/ast.2016.1600 · Cited by 107
A “Follow the Energy” Approach for Astrobiology
Hoehler, T. M., Amend, J. P., & Shock, E. L. (2007) · Astrobiology · doi:10.1089/ast.2007.0207 · Cited by 60
Metadata
- Authors
- Anderson, J. D., Schubert, G., Jacobson, R. A., Lau, E. L., Moore, W. B., & Sjogren, W. L.
- Venue
- Science
- Published
- 1998-09-25
- Volume
- 281
- Issue
- 5385
- Pages
- 2019-2022
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W4247443114
- Cited by
- 413
- References
- 0
- FWCI
- 7.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- Anderson, J. D., Schubert, G., Jacobson, R. A., Lau, E. L., Moore, W. B., & Sjogren, W. L. (1998). Europa's Differentiated Internal Structure: Inferences from Four Galileo Encounters. Science. https://doi.org/10.1126/science.281.5385.2019
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