How Galaxies Are Formed

I wanted to take a quick break from discussing the mysteries of energy to share a mesmerizing video. This NASA-created computer simulation illustrates how moving clouds of dust created in the Big Bang could accrete into the spinning collection of billions of stars that we call a galaxy.

“This cosmological simulation follows the development of a single disk galaxy over about 13.5 billion years, from shortly after the Big Bang to the present time. Colors indicate old stars (red), young stars (white and bright blue) and the distribution of gas density (pale blue); the view is 300,000 light-years across.”

Meanwhile, over at his Bayesian Biologist blog, Corey gives us an update on his attempts to find dark matter in simulated skies.