VLBA Changes Picture of Famous Star-Forming Region

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Trigonometric Parallax method determines distance to star by measuring its slight shift in apparent position as seen from opposite ends of Earths orbit. CREDIT: Bill Saxton NRAOAUINSF
Trigonometric Parallax method determines distance to star by measuring its slight shift in apparent position as seen from opposite ends of Earth's orbit. CREDIT: Bill Saxton, NRAO/AUI/NSF

Using the supersharp radio "vision" of the National Science Foundation's Very Long Baseline Array (VLBA), astronomers have made the most precise measurement ever of the distance to a famous star-forming region. The measurement -- to the heavily studied Orion Nebula -- changes scientists' understanding of the characteristics of the young stars in the region.


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