Archive for the ‘Cosmology as a science’ Category

In 1998, two separate teams, using different type Ia supernova data, went out to show that the universal expansion was slowing down due to gravity, but instead found just the opposite, that the universal expansion was accelerating. This was very controversial and very unexpected; in fact, it was so different to the accepted theory that […]


I find that I understand concepts much better when I use flow charts; I’ve had one for my controversy in the works for most of the semester, gradually evolving into this (hopefully) final flow chart: You can see, in blue, the three levels of controversy I noted in my previous post and, in white, the causes and […]


While my brain’s been buzzing over trying to choose a particular controversy in cosmology to concentrate on (e.g. dark matter debate, dark energy debate, dark flow debate, fine-tuning debate, debate over Lambda-CDM model fits…?), I thought it would be worth briefly mentioning something that appears to be fairly uniform among all of them, and indeed in […]