A twisting, rolling cloud of smoke, hundreds of thousands of light years wide. Each second of this video represents 98,540,145 years. 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

  Joseph DiStefano