“Oldest Objects in the Universe” –Hubble Clues Solve Puzzle of Globular Galaxy Clusters

  Our Milky Way Galaxy is surrounded by about 150 globular clusters, formed about 11.5 billion years ago, 2.3 billion years after the Big Bang and shortly before the rate of cosmic star formation reached its peak, 10 billion years ago –a period known as “cosmic high noon.” The largest numbers of globular clusters, over … Continue reading “Oldest Objects in the Universe” –Hubble Clues Solve Puzzle of Globular Galaxy Clusters