The Ares 3 Landing Site: Where Science Fact Meets Fiction
The Ares 3 Landing Site: Where Science Fact Meets Fiction
ESP_041277_2115  Science Theme: Future Exploration/Landing Sites
Andy Weir, the author of the best-selling novel “The Martian,” had previously contacted the HiRISE team requesting that we take a picture of the Ares 3 landing site from his novel in Acidalia Planitia, within driving distance from the Pathfinder lander and Sojourner rover. We acquired the image back in April and you can view it here. With this second image, you can download both images and try spotting any changes.

One of the main objectives of the HiRISE camera is to carry out “monitoring science”, which means we usually take images of certain areas of high scientific interest on regular intervals. We usually do so to monitor a seasonal or recurring process such as melting of ice in spring in the polar regions, dune monitoring, or recurring slope lineae. However, we also take multiple images to keep “checking up” on the progress of active rovers such as Curiosity to make sure it’s in good shape, and in order to help plan a safe, future route that would also place it within striking distance of areas of high scientific interest.

There is another key responsibility for the HiRISE camera, which is to help choose landing sites for future missions. One of the techniques we usually use is to image a certain site of interest at least twice when the weather conditions are similar, but with a small difference in viewing angle, much like what you would experience if you looked at something with only your right eye, then looked at it again with the left. By doing this, we are able to build a “stereo view” of the site, providing a chance to identify high and low points in the site more effectively. Another useful technique is to combine these two images using elevation data from laser altimeters to create a highly accurate “digital terrain model” or DTM for short.

DTMs allow us to view the locations in 3D and to analyze them by measuring the exact height of features that could be hazardous to the future mission such as large boulders or small impact craters. DTMs from HiRISE were a key factor in choosing the landing site for Curiosity in Gale Crater and are extensively being used as well to choose sites for the 2016 InSight lander and Mars 2020 rover missions. And now, we have a similar stereo pair for the Ares 3 landing site. That way, NASA can start planning on sending Mark Watney to Mars!

Written by: M. Ramy El-Maarry  (30 September 2015)

This is a stereo pair with ESP_040776_2115.
Acquisition date
17 May 2015

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
293.3 km (182.3 miles)

Original image scale range
from 31.7 cm/pixel (with 1 x 1 binning) to 63.4 cm/pixel (with 2 x 2 binning)

Map projected scale
25 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
48°, with the Sun about 42° above the horizon

Solar longitude
343.8°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  316.8°
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

Black and white
map-projected   (1039MB)

IRB color
map-projected   (699MB)

Black and white
map-projected  (525MB)
non-map           (341MB)

IRB color
map projected  (272MB)
non-map           (477MB)

Merged IRB
map projected  (321MB)

Merged RGB
map-projected  (336MB)

RGB color
non map           (485MB)
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

DTM details page

B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

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

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’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.