Earth microbe grew in simulated Enceladus ocean at pH 11

Methanogen M. okinawensis from Okinawa Trough vents grew in a lab brine mimicking Saturn's 300-mile-wide moon Enceladus, despite pH reaching 11. Researchers mixed water, salts, carbonates and powdered rock; the microbe converts hydrogen and carbon dioxide into methane. Details were published in Science Advances.