November 1921
From The Space Library
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(New page: ''Life on Mars'' an editorial by Hugo Gernsback appears in Science and Invention magazine. The same issue includes ''Have We Neighbors in Space?'' by Ivan L. Smith and ''Mercury Mi...)
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Life on Mars an editorial by Hugo Gernsback appears in Science and Invention magazine. The same issue includes Have We Neighbors in Space? by Ivan L. Smith and Mercury Mirror to Bring Mars Close about a proposed telescope with a rotating liquid mercury mirror.
