Planetary Analogs

Apollo
Earth Observatory
Landsat 9
Planetary Analogs
Topography
Apollo astronauts previewed their roles as lunar field geologists in Alaska’s Valley of Ten Thousand Smokes.
Posted June 24, 2026
Astrobiology
Earth Observatory
Ice & Glaciers
Landsat 9
Planetary Analogs
Surface Water
Water on Earth
Lake Unter-See in Antarctica, sealed beneath thick ice, contains unusually high levels of dissolved oxygen and cone-shaped microbial reefs resembling some of Earth’s oldest fossils.
Posted March 11, 2026
Earth Observatory
Earth Surface & Interior
Landsat 8 / LDCM (Landsat Data Continuity Mission)
Mars Reconnaissance Orbiter (MRO)
Planetary Analogs
Volcanoes
The hill-shaped features are a sign of explosive volcanic activity—a rarity on the Red Planet.
Posted March 2, 2026
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