Source - NASA Science News for June 26, 2015
As the Hubble Space Telescope celebrates its 25th anniversary, scientists are reflecting on the key role astronauts played in allowing the telescope to continue making great discoveries.
The complete article can be found here: http://science.nasa.gov/
A companion video is posted below and can also be viewed at: https://www.youtube.com/watch?v=R9fYj1YCGJ0&feature=youtu.be
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