Mars: the living planet
by Levin, Gilbert V., Straat, Patricia Ann, DiGregorio, Barry E.
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"In the past year, we have witnessed unprecedented breakthroughs in the seemingly unrelated fields of synthetic biology and exoplanetary astronomy. Just recently, arsenic-based bacteria was discovered in a California lake-both puzzling and electrifying the scientific world. In T…
Sixteen million years ago, an asteroid crashing into Mars sent fragments flying into space and, eons later, one was pulled by the Earth's gravity onto the icy wilderness of Antarctica, where a geologist spotted it. In its new home at NASA's Johnson Space Center in Houston, the r…
