|
Cratered Summit of a Knob
- Click the image above for a larger view
- Full-Res JPEG (2880 x 1800) (1.0 MB)
- Full-Res TIFF (2880 x 1800) (5.2 MB)
Caption:
Map Projected Browse Image
Click on the image for larger version
There are many knob formations is the southeastern Acidalia region of Mars. All show a hilltop crest except one which has a summit crater that resembles a cone volcano.
Knobs like these likely formed from interactions between water ice and lava. For instance, the crater at the top of the center knob is likely from a steam explosion when lava vaporized ice. As such, this summit crater is not an impact crater.
This caption is based on a public target suggestion from HiWish .
Background Info:
HiRISE is one of six instruments on NASA's Mars Reconnaissance Orbiter. The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colorado. 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 | Crater, Grayscale, Impact, Map, Volcano, Water | |
| Acquisition Date | ||
| Release Date | 2015-01-15 | |
| Date in Caption | ||
| Image Credit | NASA/JPL-Caltech/University of Arizona | |
| Source | photojournal.jpl.nasa.gov/catalog/PIA19131 | |
| Identifier | PIA19131 | |
