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Tuesday, April 27, 2010

Hubble, the Time Machine

In many ways, the Hubble telescope is a time machine. Amazingly, because light travels at a constant speed, Hubble has bee able to look back in time.

Because of the Hubble telescope, scientists have learned that special stars die at a certain rate of speed. Scientists programmed Hubble to take photos of these special stars in 18 different galaxies. Using the information, scientists now believe that our universe began 13.7 billion years ago.

The Hubble has helped us to see how the universe looked millions of years ago. Hubble's discoveries have allowed us to see how stars are born. We have also learned how stars die.

To learn more about Hubble's deep space images, go to http://amazing-space.stsci.edu/resources/print/lithos/hudf_litho.pdf

See Hubble images here http://hubblesite.org/gallery/album/
This photo of a star being born is courtesy NASA.

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