A series of photos taken from space more than 20 years ago revealed thousands of unknown galaxies in a tiny patch of empty space. Called the Hubble Deep Field, the amazing image is made up of hundreds of photos combined into one. It was taken over the course of 10 days from the Hubble Space Telescope and has helped astronomers and other scientists learn more about the contents, size, and age of the universe.
Buy Hubble Deep Field: How a Pluto Revolutinized Our Understanding of the Universe by Don Nardo from Australia's Online Independent Bookstore, BooksDirect.
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