Icy oceans

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  • A lot of Earth is covered by salwater oceans. The oceans are home to many types of life, from the smallest plant to the biggest whales

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  • NASA’s exploration of planets and satellites over the past 50 years has led to the discovery of water ice throughout the solar system and prospects for large liquid water reservoirs beneath the frozen shells of icy bodies in the outer solar system. These putative subsurface oceans could provide an environment for prebiotic chemistry or a habitat for indigenous life.

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  • On May 4, 1881, through the courtesy of the Chief of Revenue Marine, Mr. E.W. Clark, I was allowed to take passage from San Francisco, Cal., on board the United States Revenue steamer Corwin, whose destination was Alaska and the northwest Arctic ocean. The object of the cruise was, in addition to revenue duty, to ascertain the fate of two missing whalers and, if possible, to communicate with the Arctic exploring yacht Jeannette.

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