A Singular Conundrum: How Odd Is Our Universe?
Adrian Cho
Science 28 Sep 2007:
Vol. 317, Issue 5846, pp. 1848-1850
Source/NASA
Summary
Subtleties in the big bang afterglow could hint that the universe is arranged around an "axis of evil." Or they may be the products of random chance. With only one universe to study, researchers may be hard pressed to say one way or the other.
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Tendão de Aquiles em cosmologia - Algumas citações a serem consideradas cum grano salis:
1. Researchers have measured the temperature variations in the CMB so precisely that the biggest uncertainty now stems from the fact that we see the microwave sky for only one Hubble volume, an uncertainty called cosmic variance. ‘We’ve done the measurement,’ [Charles] Bennett says. ‘It’s not going to get any better.’
2. That barrier to knowledge, some argue, is cosmology’s Achilles’ heel. ‘Cosmology may look like a science, but it isn’t a science,’ says James Gunn of Princeton University, co-founder of the Sloan survey. ‘A basic tenet of science is that you can do repeatable experiments, and you can’t do that in cosmology.’
3. ‘The goal of physics is to understand the basic dynamics of the universe,’ [Michael] Turner says. ‘Cosmology is a little different. The goal is to reconstruct the history of the universe.’ Cosmology is more akin to evolutionary biology or geology, he says, in which researchers must simply accept some facts as given.
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Em biologia evolucionária e geologia os cientistas devem aceitar alguns fatos como dados??? E que a cosmologia não é ciência? E que a cosmologia se parece com a geologia e a biologia evolucionária? Pode isso, Arnaldo?
