Mars ‘air’ found thinner

Excerpt from the February 15, 1964, issue of Science News Letter

By Science News Staff, 17:26 PM January 23, 2014

The atmosphere on Mars is as thin as the earthly air 15 miles above the surface, the American Meteorological Society meeting in Los Angeles was told. Martian “air” is mostly nitrogen, with a little carbon dioxide and traces of oxygen and water vapor, unlike that on earth. The Martian atmosphere has now been found to be about a third as dense as previously believed. The finding has forced scientists to revise their designs of capsules that could land on Mars…. A thinner Martian atmosphere mean...

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