text: Newfound Star Cluster may be Final Milky Way 'Fossil' Jet Propulsion Lab -- Just when astronomers thought they might have dug up the last of our galaxy's "fossils," they've discovered a new one in the galactic equivalent of our own backyard.     Called globular clusters, these ancient bundles of stars date back to the birth of our Milky Way galaxy, 13 or so billion years ago...