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The Spring 2011 issue of The Earth Scientist is focused on modernizing seismology education. Thanks to IRIS, you can download this issue for free as a pdf. Print copies are available in our online store.

Satellite Statistics

Satellite Mean distance from planet (miles) Maximum diameter (miles) Orbital period (days) density (g/cm3)

Metis 79,510 25 0.295 ?
Adrastea 80,140 15 0.298 ?
Amalthea 112,700 170 0.49 ?
Thebe 137,900 60 0.68 ?
Io 262,000 2,260 1.8 3.57
Europa 416,900 1,950 3.6 2.97
Ganymede 664,900 3,270 7.2 1.94
Callisto 1,170,000 2,980 16.7 1.86
Leda 6,893,000 10 238.7 ?
Himalia 7,133,000 110 250.6 ?
Lysithea 7,282,000 25 259.2 ?
Elara 7,293,000 50 259.7 ?
Ananke 13,170,000 20 631 ?
Carme 14,000,000 25 692 ?
Pasiphae 14,600,000 45 735 ?
Sinope 14,700,000 25 758 ?

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA