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Concentric Rings Surrounding Valhalla
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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 | Cassini Orbiter | Voyager 1 |
| Host Type | Orbiter | Flyby Spacecraft |
| Instrument | Imaging Science Subsystem (ISS) | |
| Detector | ||
| Extra Keywords | Crater, Grayscale, Impact | |
| Acquisition Date | ||
| Release Date | 1997-01-09 | |
| Date in Caption | ||
| Image Credit | NASA/JPL | |
| Source | photojournal.jpl.nasa.gov/catalog/PIA00484 | |
| Identifier | PIA00484 | |
