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Hubble sees multiple star generations in a globular cluster
05-02-2007 · European Space Agency (ESA)Hubble's observations of the massive globular cluster NGC 2808 provide evidence for three generations of stars that formed early in its life. This is a major upset for conventional theories that propose a single period of star birth.
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Keywords: hubble, sees, multiple, star, generations, globular, cluster, see, generation
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Similar news on "Hubble sees multiple star generations in a globular cluster":
- Hubble finds multiple stellar 'baby booms' in a globular cluster
05-02-2007 · EurekAlert!
Analysis of Hubble observations of the massive globular cluster NGC 2808 provides evidence that it has three generations of stars that formed early in the cluster's life. This is a major upset for conventional theories as astronomers have long thought that globular star clusters had a single "baby boom" of stars early in their lives and then settled down into a long, quiet middle age.
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- Hubble yields direct proof of stellar sorting in a globular cluster
10-24-2006 · EurekAlert!
A seven-year study with the NASA/ESA Hubble Space Telescope has provided astronomers with the best observational evidence yet that globular clusters sort out stars according to their mass. Heavier stars slow down and sink to the cluster's core, while lighter stars pick up speed and move across the cluster to its periphery. This process, called "mass segregation," has long been suspected for globular star clusters, but has never before been directly seen in action.
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- Star family seen through dusty fog
03-13-2007 · EurekAlert!
Images made with ESO's New Technology Telescope at La Silla by a team of German astronomers reveal a rich circular cluster of stars in the inner parts of our Galaxy. Located 30,000 light-years away, this previously unknown closely-packed group of about 100,000 stars is most likely a new globular cluster.
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- Extreme star cluster in new Hubble images
10-02-2007 · European Space Agency (ESA)
The gigantic nebula NGC 3603 hosts one of the most prominent, massive, young clusters in the Milky Way. Hubble has been observing this prime location for star formation studies.
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- Extreme star cluster bursts into life in new Hubble image
10-02-2007 · EurekAlert!
The NASA/ESA Hubble Space Telescope has captured a spectacular image of NGC 3603, a giant nebula hosting one of the most prominent massive young clusters in the Milky Way, thus supplying a prime template for star formation studies.
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- Black hole boldly goes where no black hole has gone before
01-03-2007 · European Space Agency (ESA)
Astronomers have found a black hole where few thought they could ever exist, inside a globular star cluster. The finding has broad implications for the dynamics of stars clusters and also for the existence of a still-speculative new class of black holes called 'intermediate-mass' black holes.
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- Hubble sees dark matter ring in a galaxy cluster
05-15-2007 · European Space Agency (ESA)
A team of astronomers used the Hubble Space Telescope to find the best evidence yet for the existence of dark matter, present in the form of a ghostly ring in a galaxy cluster.
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- Hubble sees 'Comet Galaxy' being ripped apart by galaxy cluster
03-02-2007 · EurekAlert!
The NASA/ESA Hubble Space Telescope, in collaboration with several other ground- and space-based telescopes, has captured a galaxy being ripped apart by a galaxy cluster's gravitational field and harsh environment. The finding sheds light on the mysterious process by which gas-rich spiral-shaped galaxies might evolve into gas-poor irregular- or elliptical-shaped galaxies over billions of years. The new observations also show one mechanism to form the millions of "homeless" stars seen scattered throughout galaxy clusters.
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- Supernova Radioisotopes Show Sun Was Born In Star Cluster, Scientists Say
10-05-2006 · ScienceDaily
The death of a massive nearby star billions of years ago offers evidence the sun was born in a star cluster, say astronomers at the University of Illinois at
Urbana-Champaign. Rather than being an only child, the sun could have hundreds or thousands of celestial siblings, now dispersed across the heavens.
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- Learning to evolve: With a little help from my ancestors
07-30-2007 · EurekAlert!
Using computer simulations, Stone demonstrates that the ability to learn in network models has two surprising consequences. First, learning accelerates the rate at which a skill becomes innate over generations, so it accelerates the evolution of innate skill acquisition. Second, learning in previous generations indirectly induces the formation of a latent memory in the current generation, and therefore decreases the amount of learning required.
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