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Small Expanded Craters in the Northern Lowlands
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Caption:
Map Projected Browse Image
Click on the image for larger version
This image shows many small craters over a larger degraded one in the northern lowlands. These small craters are smoother and shallower than their counterparts closer to the equator.
Scientists believe this difference is a result of impact into a region with subsurface ice, which sublimates when exposed to the Martian atmosphere. This causes the crater to gradually expand and flatten after impact.
Background Info:
The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.
Cataloging Keywords:
| Name | Value | Additional Values |
|---|---|---|
| Target | Mars | |
| System | ||
| Target Type | Planet | |
| Mission | Mars Reconnaissance Orbiter (MRO) | |
| Instrument Host | Mars Reconnaissance Orbiter | |
| Host Type | Orbiter | |
| Instrument | High Resolution Imaging Science Experiment (HiRISE) | |
| Detector | ||
| Extra Keywords | Atmosphere, Color, Crater, Impact, Map | |
| Acquisition Date | ||
| Release Date | 2016-08-24 | |
| Date in Caption | ||
| Image Credit | NASA/JPL-Caltech/Univ. of Arizona | |
| Source | photojournal.jpl.nasa.gov/catalog/PIA21021 | |
| Identifier | PIA21021 | |
