polygons Archives - Astrobiology

Martian surface Sols 4852-4853, - NASA

Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Desert Worlds, Imaging & Spectroscopy, Mars, Missions & Hardware, Robotics/Rovers/UAVs, Status Report

Mars Curiosity Blog, Sols 4852–4858: When Data Take Their Time…

by Keith CowingApril 16, 2026April 16, 2026

Earth planning date: Friday, April 3, 2026 Written by Susanne P. Schwenzer, Professor of Planetary Mineralogy at The Open University, UK

A field of sand dunes in the Martian springtime -- NASA

Arctic / Antarctic / Alpine, Astrogeology, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Mars, Status Report

Defrosting Dunes On Mars

by Keith CowingApril 30, 2024April 30, 2024

This image shows a field of sand dunes in the Martian springtime while the seasonal carbon dioxide frost is sublimating into the air. This sublimation process is not at all […]

Topographic map of Utopia Planitia, showing the landing sites of the Zhurong rover, the Viking 2 lander and the Perseverance rover. The −4 km elevation contour is shown.representative HiRISE images of polygons in Utopia Planitia whose locations (d), PSP_002162_2260 (e) and PSP_003177_2275 Credit for HiRISE images: NASA/JPL/University of Arizona.

Astrogeology, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Mars, Press Release

Zhurong Radar Detects Buried Polygons Beneath Utopia Planitia On Mars

by Keith CowingDecember 21, 2023September 18, 2025

A joint research team led by the Institute of Geology and Geophysics of the Chinese Academy of Sciences (IGGCAS) has reported the discovery of buried palaeo-polygonal terrain beneath Utopia Planitia […]

Battleship Promontory is known for its large sandstone formations and numerous cliffs and pillars. The elevation is about 1800 meters above mean sea level.

Analog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biosignatures & Paleobiology, Cryobiology, Dale Andersen's Field Reports, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Fossils & Paleontology, Habitable Zones, Icy Worlds, Status Report

Dale Andersen’s 1996 Antarctic Field Research Photo Album Volume 2

by Keith CowingDecember 20, 1996November 23, 2023

Editor’s note: This is a revised version of the original website that was first posted – from Antarctica – in 1996.