Wednesday, February 16, 2005

Life on Mars?

This article: NASA Researchers Claim Evidence of Present Life on Mars discusses new work pointing to the likelihood that there is life on Mars. This finding has seemed inevitable to me as Mars research has progressed. One of the Viking landers in the 70's tested for life. Three tests were done. 2 of the 3 tests were positive, but the negative result for the the third test, which failed to find organic compounds was deemed sufficient to negate the other two tests. I never felt like the explanations offered to discount the other two tests were convincing.

Since that time we have discovered bacteria living deep in the subsurface at extremely high temperatures and in Antarctic ice. Basically, it appears that bacteria can live just about anywhere, plus some studies have shown they can survive in space. Given all this, it is not surprising to discover there is life on Mars. I would also not be surprised to learn there is life on Jupiter or Saturn, or even Venus. I think in the Solar System and in the rest of the universe, life is much more prevalent than most people believe.

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