Media Information
 
 
 
Collection:
NASA Astronomy Picture of the Day Collection
Title:
Io Rotating
Explanation:
The surface of Io is continually changing. Jupiter's moon [ http://antwrp.gsfc.…] is the home to many powerful volcanoes [ http://antwrp.gsfc.…] so active they are effectively turning the moon inside out. The above time-lapse sequence [ http://solarviews.c…] is a composite of images taken during two space missions that approached the violent moon: Voyager [ http://vraptor.jpl.…] and Galileo [ http://www.jpl.nasa…]. The sequence shows Io [ http://www.seds.org…] during a complete rotation, which corresponds to a complete revolution around Jupiter [ http://www.jpl.nasa…] since Io [ http://cass.jsc.nas…] always keeps the same face toward the giant planet. The rampant volcanism is thought to be caused by Jupiter's more distant Galilean Moons [ http://solarviews.c…] (Europa [ http://www.seds.org…], Ganymede [ http://www.seds.org…], and Callisto [ http://www.seds.org…]) pulling on Io and continually distorting its shape, causing internal frictional [ http://www.cord.edu…] heating. Io is composed mostly of rock, with the yellow color originating from sulfur [ http://chemlab.pc.m…]. The causes of many of the other colors remain a topic of research [ http://adsabs.harva…].
Credit and Copyright:
Calvin J. Hamilton [ http://solarviews.c…], Voyager [ http://vraptor.jpl.…] Team, Galileo Team [ http://galileo.jpl.…], NASA [ http://www.nasa.gov/]
keyword:
Io
keyword:
Jupiter's Moons
keyword:
rotation
facet_where:
Ganymede
facet_where:
Jupiter
facet_where:
Europa
facet_where:
Hamilton
facet_where:
Callisto
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
Jet Propulsion Laboratory (JPL)
facet_where:
Johnson Space Center (JSC)
facet_what:
Galileo
facet_what:
Voyager
facet_what:
Ganymede
facet_what:
Moon
facet_what:
Jupiter
facet_what:
Io
facet_what:
Europa
facet_what:
Callisto
original url:
http://antwrp.gsfc.…
UID:
SPD-APOD-ap001024

Io Rotating
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