NASA6d ago
A Most Unusual Lake https://science.nasa.gov/earth/earth-observatory/a-most-unusual-lake/ #NASA #Astrobiology #EarthObservatory #IceGlaciers #Landsat9 #PlanetaryAnalogs #SurfaceWater #WaterOnEarth
A Most Unusual Lake

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.

NASA Science
NASAMar 2
Scoria Cones on Earth and Mars https://science.nasa.gov/earth/earth-observatory/scoria-cones-on-earth-and-mars/ #NASA #EarthObservatory #EarthSurfaceInterior #Landsat8LDCMLandsatDataContinuityMission #MarsReconnaissanceOrbiterMRO #PlanetaryAnalogs #Volcanoes
Scoria Cones on Earth and Mars

The hill-shaped features are a sign of explosive volcanic activity—a rarity on the Red Planet.

NASA Science