Long-lasting Ice in a Young Crater
Long-lasting Ice in a Young Crater
ESP_069092_2310  Science Theme: Impact Processes
The HiRISE and Context Camera instruments on the Mars Reconnaissance Orbiter have worked together to image many new impact craters that have formed within the last few years. At middle and high latitudes, these craters often dig up ice, which is initially bright and then fades away as it sublimates.

A small crater here was first seen by HiRISE in 2010, and some of the ice is still bright over a decade later. A theory suggests that many millimeters of ice should have been lost in that time. Since we can still see the ice, it must be very clean, without much dust or debris mixed in. How many changes can you spot?

Written by: Colin Dundas (narration: Tre Gibbs)  (15 June 2021)
Acquisition date
23 April 2021

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
301.2 km (187.2 miles)

Original image scale range
from 30.2 cm/pixel (with 1 x 1 binning) to 60.4 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
52°, with the Sun about 38° above the horizon

Solar longitude
35.3°, Northern Spring

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  339.2°
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   (403MB)

IRB color
map-projected   (276MB)

Black and white
map-projected  (204MB)
non-map           (258MB)

IRB color
map projected  (66MB)
non-map           (196MB)

Merged IRB
map projected  (140MB)

Merged RGB
map-projected  (135MB)

RGB color
non map           (192MB)
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.