Biology
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987plr.....7f..16o&link_type=abstract
Planetary Report (ISSN 0736-3680), vol. 7, Nov.-Dec. 1987, p. 16-18.
Biology
Chemical Evolution, Exobiology, Planetary Composition, Solar System, Space Exploration, Comet Nuclei, Comet Rendezvous Asteroid Flyby Mission, Jupiter (Planet), Organic Chemistry, Saturn (Planet), Titan, Planets, Giant Planets, Chemistry, Evolution, Satellites, Comparisons, Environment, Living Organisms, Atmosphere, Composition, Analogs, Color, Carbon, Water Vapor, Jupiter, Spectroscopy, Compounds, Energy, Europa, Saturn, Titan, Comets, Comet Nuclei, Mission Planning
Scientific paper
It has been hypothesized that the chemical conditions today on the planets and moons of the outer solar system are similar to conditions on earth soon after it formed. If this is so, much can be learned about the chemistry that led to life on earth. While Jupiter is a poor terrestrial analog, its satellite Europa has a smooth icy surface that may cover a layer of liquid water tens of kilometers deep. It is possible that sunlight could filter through cracks in the ice, providing energy to drive chemical reactions in the water below the ice. It is noted that the surface of Titan may include lakes or oceans of ethane and that Triton may also have liquids on its surface. Studies of cometary nuclei will be undertaken during the Comet Rendezvous-Asteroid Flyby mission.
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