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White waters of Kueishantao: sulfur-rich hydrothermal fluids turn the sea milky. Photo: MARUM – Center for Marine Environmental Sciences, University of Bremen; S. Bühring In the global carbon cycle microorganisms

Earth’s stratosphere — NASA Although the high-altitude limit for microbial survival in the Earth–atmosphere system has remained a scientific curiosity and topic of study, the ecological significance of long-distance microbial

Schematic overview of CO2 ice segregation in protostellar envelopes. The temperature and density zones are separated by the gray dashed lines and each grain represents a different stage of ice

Top: an example of a chop-subtraction image pair from VLT/NEAR. Image B, following 0.05 sec after A, is subtracted to remove the detector bias, thermal background, AGPM glow, and excess