Media Information
 
 
 
Collection:
NASA Astronomy Picture of the Day Collection
Title:
Jagged Hills on Jupiter's Callisto
Explanation:
Why does Jupiter's moon Callisto have unusual jagged hills? This mystery came to light after the robot spacecraft [ http://galileo.jpl.…] Galileo [ http://galileo.jpl.…], in orbit around Jupiter [ http://www.nineplan…] since 1995, swooped past the dark moon [ http://antwrp.gsfc.…] in May. The resulting pictures [ http://www.jpl.nasa…] were the highest resolution yet obtained for a Jovian moon [ http://galileo.jpl.…]: objects as small as 3 meters across are discernable. The strange landscapes pictured above [ http://antwrp.gsfc.…http://galileo.jpl.…] show areas rich in bright sharp mounds about 100 meters tall. A likely formation hypothesis [ http://galileo.jpl.…] holds that these hills are the result of ejecta thrown billions of years ago during a violent impact [ http://antwrp.gsfc.…]. The lower inset region apparently has undergone an epoch of relatively high ice-erosion [ http://members.edve…], where dark rock has filled in some of the inter-hill regions. NASA [ http://www.nasa.gov/] has recently cleared Galileo [ http://galileo.jpl.…] to continue swooping Jupiter's moons [ http://www.sciam.co…] until 2003, when it will end its journey [ http://galileo.jpl.…] with a spectacular dive [ http://antwrp.gsfc.…] into Jupiter's atmosphere [ http://antwrp.gsfc.…].
Credit and Copyright:
Galileo Project, Arizona State University [ http://phy.asu.edu/], JPL, NASA [ http://www.nasa.gov/]
keyword:
Jupiter
keyword:
Callisto
facet_where:
Arizona
facet_where:
Jupiter
facet_where:
Callisto
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
Jet Propulsion Laboratory (JPL)
facet_what:
Galileo
facet_what:
Moon
facet_what:
Jupiter
facet_what:
Callisto
original url:
http://antwrp.gsfc.…
UID:
SPD-APOD-ap010828

Jagged Hills on Jupiter's Callisto
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