Raining Rocks
NASA/JPL/University of Arizona
Raining Rocks
PSP_005145_1690  Science Theme: Impact Processes


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Impact ejecta is material that is thrown up and out of the surface of a planet as a result of the impact of an meteorite, asteroid or comet. The material that was originally beneath the surface of the planet then rains down onto the environs of the newly formed impact crater.

Some of this material is deposited close to the crater, folding over itself to form the crater rim, visible here as a yellowish ring. Other material is ejected faster and falls down further from the crater rim creating two types of ejecta: a “continuous ejecta blanket” and “discontinuous ejecta.” Both are shown in this image. The blocky area at the center of the image close to the yellowish crater rim is the “continuous” ejecta. The discontinuous ejecta is further from the crater rim, streaking away from the crater like spokes on a bicycle.

(Note: in the above image and the cutout, North is to the right.)

Written by: Veronica Bray  (1 February 2017)
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Acquisition date
01 September 2007

Local Mars time:
14:19

Latitude (centered)
-10.441°

Longitude (East)
24.556°

Range to target site
262.5 km (164.1 miles)

Original image scale range
52.5 cm/pixel (with 2 x 2 binning) so objects ~158 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
5.2°

Phase angle:
39.9°

Solar incidence angle
35°, with the Sun about 55° above the horizon

Solar longitude
306.0°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  345.5°
JPEG
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

JP2
Black and white
map-projected   (1092MB)

IRB color
map-projected   (459MB)

JP2 EXTRAS
Black and white
map-projected  (703MB)
non-map           (678MB)

IRB color
map projected  (328MB)
non-map           (611MB)

Merged IRB
map projected  (1206MB)

Merged RGB
map-projected  (1142MB)

RGB color
non map           (592MB)
ANAGLYPHS
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

USAGE POLICY
All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible:
NASA/JPL/University of Arizona

POSTSCRIPT
NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA’s Science Mission Directorate, Washington. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.