Recent news that Ganymede, Jupiter’s famous moon, may house more water than the Earth, is interesting. NASA’s bold claim that they “shall find” extra-terrestrial life in less than 20 years, should be viewed with abundant caution in this context. If significant water worlds in close proximity to Earth are lifeless, one has to question the logic of looking for water across space. The problem is that, once hypothesized, nothing remains unproven in contemporary science.
If Ganymede has underground oceans that rival the Earth, all efforts should be focused on finding life there – not in distant galaxies. If the presence of water is a necessary condition for life to emerge, as argued by the famous and the systematic, then they have to focus on the many instances of water in the solar system itself. If attempts at finding life in these close quarters come empty, then one has to question both the idea that life could exist elsewhere and if water is a necessary condition for life. One cannot have it both ways. Just as the “Higgs Boson” surfaced in mindless noisy data, it will not be sufficient to show spectral noise of oxygen and water, somewhere in a distant galaxy and claim extra-terrestrial life. Scientists, with egos that rival the stupid, have shown a weakness when it comes to proving stated hypotheses – and never even considering the alternative. But then, tenure and publications are more important than real science.
If there is only one observation of life ridden mass in the entire universe, then, the probability remains close to zero to find it elsewhere. No amount of mathematical manipulation is going to make this probability higher. And, if life cannot be found in conditions that are assumed to be favorable, the probability of extra-terrestrial life gets even less. It is depressing to think that the samples of life that can be observed on Earth, are indeed the best the universe could come up with. But that does not mean that they exist elsewhere.