ocr: t9 - THE SEARCHI FOR LIFE The Viking missions findings METEORITES THE SETI PROGRAM The Viking space probes were equipped with three experimental modules designed to detect life on Mars. Findings from two of these experiments were positive, and the explanation may indeed be biological. But the results ofl both experments can also be explained by equally plausible, nonbiological phenomena. Let's take a look at the pyrolytic release experiment. The principle is relatively simple. The experment sought to determine what chemical changes Martian soil undergoes when heated (such neat-inauced changes ...
