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View Full Version : Hubble Reveals Dimmest Stars in a Nearby Cluster



Fraser
2006-Aug-17, 06:07 PM
New photographs from the Hubble Space Telescope show some of the faintest stars ever seen in a globular cluster. The cluster is NGC 6397, which formed almost right at the beginning of the Universe, nearly 12 billion years ago. This means the stars in the formation are made of the primordial material that formed shortly after the Bang Bang. These dim stars are white dwarfs that were once more massive versions of our own Sun. They cool at a very predictable rate, giving astronomers another way to calculate the age of the Universe.

Read the full blog entry (http://www.universetoday.com/2006/08/17/hubble-reveals-dimmest-stars-in-a-nearby-cluster/)