When Did Galaxies Get Their Spirals?

What makes a spiral galaxy, well, spiral? And how long does it take them to get in a spin? Continue reading →

December 30, 2013
2:13 PM EST
Three of the five galactic morphologies studied in this research: grand design (top row), normal multiple arm and woolly. There are three examples of each (in color) and an H-band image of the right-most example in black and white. | Elmegreen and Elmegreen