PIA00484: Concentric Rings Surrounding Valhalla


Concentric Rings Surrounding Valhalla

Caption:

The concentric rings surrounding Valhalla are perhaps the most distinctive geological feature on Callisto. This Voyager 1 close-up shows a segment of the ridged terrain. The presence of superimpact craters shows that the rings formed early in Callisto's history; however, the density of craters is less here than on other parts of the satellite, where the surface is older.

Cataloging Keywords:

Name Value Additional Values
Target Callisto
System Jupiter
Target Type Satellite
Mission Voyager
Instrument Host Voyager 1
Host Type Flyby Spacecraft
Instrument Imaging Science Subsystem (ISS)
Detector
Extra Keywords Crater, Grayscale
Acquisition Date
Release Date 1997-01-09
Date in Caption
Image Credit NASA/JPL
Source photojournal.jpl.nasa.gov/catalog/PIA00484
Identifier PIA00484