Media Information

 
 
 
Collection:
NASA Astronomy Picture of the Day Collection
Title:
Callisto Enhanced
Explanation:
Callisto [ http://antwrp.gsfc.…] is half rock and half ice. This moon of Jupiter [ http://www.hawastso…] is approximately the size of the planet Mercury [ http://www.seds.org…], making it the third largest moon in the Solar System [ http://antwrp.gsfc.…], after Ganymede [ http://www.jpl.nasa…] and Titan [ http://www.seds.org…]. Callisto [ http://www.seds.org…]'s icy surface is billions of years old, lacks any sign of volcanic activity [ http://antwrp.gsfc.…], and is densely covered with rifts and craters. These features are particularly apparent in this contrast-enhanced image [ http://photojournal…] taken by the Galileo spacecraft [ http://www.jpl.nasa…], and released last week. Visible near the image center is Valhalla [ http://www-a.jpl.na…], one of the largest impact craters in the Solar System, measuring about 4,000 kilometers across. The rings and size of Valhalla [ http://www.hawastso…] make its appearance similar to the Caloris Impact Basin [ http://antwrp.gsfc.…] on Mercury.
Credit and Copyright:
Galileo Project, JPL, NASA [ http://www.nasa.gov/]
keyword:
Jupiter
keyword:
Callisto
facet_where:
Ganymede
facet_where:
Mercury
facet_where:
Jupiter
facet_where:
Callisto
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
Jet Propulsion Laboratory (JPL)
facet_what:
Galileo
facet_what:
Ganymede
facet_what:
Moon
facet_what:
Mercury
facet_what:
Jupiter
facet_what:
Titan
facet_what:
Callisto
original url:
UID:
SPD-APOD-ap980512

Callisto Enhanced