For the first time, astronomers have explained the diversity of galaxy shapes seen in the universe. Two scientists from the California Institute of Technology (Caltech) and Embry-Riddle University in Arizona, tracked the evolution of galaxies over thirteen billion years from the early Universe to the present day. The astronomers built a model based on the ‘Lambda Cold Dark Matter’ model of the Universe. To their surprise, their computations reproduced not only the different galaxy shapes but also their relative numbers.