Potential for extraterrestrial life

Potential for extraterrestrial life - Potential for...

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Potential for extraterrestrial life A black smoker in the Atlantic Ocean. Driven by geothermal energy, this and other types of hydrothermal vents create chemical disequilibria that can provide energy sources for life. Europa has emerged as one of the top Solar System locations in terms of potential habitability and possibly, hosting extraterrestrial life . [66] Life could exist in its under-ice ocean, perhaps subsisting in an environment similar to Earth's deep-ocean hydrothermal vents or the Antarctic Lake Vostok . [67] Life in such an ocean could possibly be similar to microbial life on Earth in the deep ocean . [68] [69] So far, there is no evidence that life exists on Europa, but the likely presence of liquid water has spurred calls to send a probe there. [70] Until the 1970s, life, at least as the concept is generally understood, was believed to be entirely dependent on energy from the Sun. Plants on Earth's surface capture energy from sunlight to photosynthesize sugars from carbon dioxide and water, releasing oxygen in the process, and are then eaten by oxygen-respiring animals, passing their energy up the food chain . Even life in the deep ocean , far below the reach of sunlight , was believed to obtain its nourishment either from the organic detritus raining down from the surface, or by eating animals that in turn depend on
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Potential for extraterrestrial life - Potential for...

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