Archive for the ‘Observation’ Category

But it was not the end of the controversy. There are three major problems with the cosmological constant that have caused the dark energy controversy to continue. The cosmological constant is controversial because: It’s often been used in the past as a fudge factor, only to be gotten rid of after more information has been gathered […]


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 […]


Between spraining my finger in a particularly aggressive game of netball, getting sick, getting back-to-back infections, having an exam, diving with sharks, attending Hen’s day/nights, and suddenly having a wave of scrapbooking inspiration (you just can’t ignore creativity when it strikes!), I haven’t had a lot of time to think about much, let alone cosmology controversies. […]


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 […]