In this image provided by NASA and taken by the Hubble Space Telescope shows previously unseen early galaxies including the oldest one at 13.3 billion years old. Launched in 1990, Hubble has peered deep in time to reveal distant and old galaxies. (AP Photo/NASA)

Associated Press
In this image provided by NASA and taken by the Hubble Space Telescope shows previously unseen early galaxies including the oldest one at 13.3 billion years old. Launched in 1990, Hubble has peered deep in time to reveal distant and old galaxies. (AP Photo/NASA)
In this image provided by NASA and taken by the Hubble Space Telescope shows previously unseen early galaxies including the oldest one at 13.3 billion years old. Launched in 1990, Hubble has peered deep in time to reveal distant and old galaxies. (AP Photo/NASA)
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