How a scientist discovered we lived in one galaxy of many
Until 84 years ago astronomers thought the Milky Way Galaxy was the entire universe. Then they found that fuzzy objects in the sky were galaxies themselves.
Published:
August 21, 2009
 Also known as M31, the Andromeda Galaxy is the furthest-away object that can be viewed with the naked eye.
Photo by T. A. Rector/B. A. Wolpa/NOAO/AURA/NSF |
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