Hubble Stretches Stellar Tape Measure 10 Times Farther into Space

Hubble Stretches Stellar Tape Measure 10 Times Farther into Space

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Fast Facts
News release ID: STScI-2014-23
Release Date: Apr 10, 2014
Image Use: Copyright
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.


Tags
Hubble Telescope, Illustrations, Stars, Variable Stars

Credits

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)