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Something on Mars Is Producing Gas ­sually Made by Living Things on Earth

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A view of Mars taken by the European Space Agencys Mars Express spacecraft in 2016.

Credit: ESA/DLR/FU Berlin/Justin Cowart

Methane gas periodically wafts into the atmosphere of Mars; that notion, once considered implausible and perplexing, is now widely accepted by planetary scientists.

From The New York Times
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