Hubble revisits a globular cluster&#x27;s age - IC 4400&#x27;s mass lies somewhere between low-mass globular clusters, which show a single generation buildup, and the more complex and massive globulars, which can contain more than one generation of stars. Data obtained more recently from the Hubble Space Telescope reveals the cluster&#x27;s age to be like that of other Milky Way clusters, about 12 billion years