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News Release Archive:

News Release 30 of 967

April 10, 2014 10:00 AM (EDT)

News Release Number: STScI-2014-23

Hubble Stretches Stellar Tape Measure 10 Times Farther into Space

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Image: Hubble Stretches Stellar Tape Measure 10 Times Farther into Space

Hubble Stretches Stellar Tape Measure 10 Times Farther into SpaceSTScI-PRC2014-23

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ABOUT THIS IMAGE:

This illustration shows how the precision stellar distance measurements from NASA's Hubble Space Telescope have been extended 10 times farther into our Milky Way galaxy than possible previously. This greatly extends the volume of space accessible to refining the cosmic yardstick needed for measuring the size of the universe. This most solid type of measurement is based on trigonometric parallax, which is commonly used by surveyors. Because the stars are vastly farther away than a surveyor's sightline, Hubble must measure extremely small angles on the sky.

Image Type: Illustration

Illustration Credit: NASA, ESA, and A. Feild (STScI)

Science Credit: NASA, ESA, A. Riess (JHU/STScI), S. Casertano (STScI/JHU), J. Anderson and J. MacKenty (STScI), and A. Filippenko (University of California, Berkeley)