Fact Check: Did high methane level indicate life on Mars? The science, the setback
What were scientists hoping to find, and what does methane signify?
Last week, NASA’s Curiosity rover discovered high amounts of methane in the air on Mars, leading to excitement whether this was an indication of life on the Red Planet, or beneath its surface. But on Monday, NASA reported that the methane had fallen back to usual levels. The setback means the question of life remains unanswered. What were scientists hoping to find, and what does methane signify?
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