April 29, 2008 - USA Today
Several newfound galaxies seen as they existed when the universe was young are packed with improbable numbers of stars
...
Van Dokkum and his colleagues had previously studied the galaxies in 2006 with the Gemini South Telescope to determine their distances, and showed that the stars are a half a billion to a billion years old. The most massive stars had already exploded as supernovae.
...