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Continent-wide Very Long Baseline Array is Remeasuring the Universe

03/22/2011 03:20AM

Continent-wide Very Long Baseline Array is Remeasuring the Universe

Using the super-sharp "radio vision" of astronomy's most precise telescope, scientists have extended a directly-measured "yardstick" three times farther into the cosmos than ever before. The continent-wide Very Long Baseline Array (VLBA) provides the greatest resolving power of any telescope in the world. The VLBA uses ten 25-meter-diameter dish antennas distributed from Hawaii to St. Croix in the Caribbean. Together they can produce images that are equivalent to sitting in New York and reading a newspaper in Los Angeles. This power allows astronomers to make precise cosmic measurements with far-ranging implications for research within our own Galaxy and far beyond. Recent direct measurements with the VLBA have placed a galaxy called NGC 6264 at a distance of 450 million light-years from Earth. This is the farthest distance ever directly measured from Earth.


Comments:

  • bobguz [Robert Guzauskas]
  • 04/25/2011 12:53AM
Great! New VLBA measurements can now be compared to the hypothesized Redshift distance calculations. I hope Halton Arp is still alive and well.<br>