One more thing…

As an addendum to my previous post on prospective life on Titan, I should point out a couple of things from those papers I cited…

Citing Tobie et al (2006), Mitri et al (2007) state that;

“Since Cassini-Huygens indicates that such [hydrocarbon] oceans are not present, the atmospheric methane abundance might be the result of a geologically recent outgassing episode from the interior.”

While this is a perfectly fair and reasonable conclusion to draw, I must say that my inner skeptic is finding it increasingly difficult to believe that the entire solar system just happens to be full of the effects of geologically recent events – which don’t presently appear to be occurring. Phrases like “geologically recent outgassing” are rapidly becoming catch-all possible explanations for things which we can’t fully account for. The more frequently I see paragraphs like this, the more difficulty I have in believing that they’re all true. Certainly, some probably are, but if the same is true of at least 3 different planets, it’s something of a coincidence, wouldn’t you say?

Also, McKay and Smith, in closing, mention;

“If life has evolved in this environment its effects, as on Earth, are unlikely to be subtle.”

Quite. I expect we will inevitably discover extraterrestrial life. When we know what we’re looking for, chances are good that it’ll be staring us right in the face. Perhaps literally, who knows?

About Invader Xan

Molecular astrophysicist, usually found writing frenziedly, staring at the sky, or drinking mojitos.
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