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News Release Archive:

News Release 213 of 938

May 7, 2009 09:00 AM (EDT)

News Release Number: STScI-2009-08

Refined Hubble Constant Narrows Possible Explanations for Dark Energy

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Image: Compass and Scale File for NGC 3021

Compass and Scale File for NGC 3021

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Image Type: Astronomical/Illustration

Photo Credit: NASA, ESA, and Z. Levay (STScI)

Science Credit: NASA, ESA, and A. Riess (STScI/JHU)

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