Fresh Hints of Life on Mars

For scientists hunting for life on Mars, the new buzzword is methane. In 2003 a group studying the Red Planet saw the spectral signal of methane gas, often a sign of biological activity on Earth. Since then, Michael Mumma, director of NASA's Goddard Center for Astrobiology, has monitored Mars closely. In January he announced his results: Broad plumes of methane emanate from the planet's surface, "fundamentally changing our understanding of Mars."

#21: Fresh Hints of Life on Mars | Extraterrestrial Life | DISCOVER Magazine.

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