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The great galaxy in Andromeda shines at mag 3.4, which is very bright. It is visible even in light polluted areas, and is the farthest galaxy that can be seen with the naked eye. It takes 2.5 million years for its light to reach us.
So the pictures show M31 as it was 2.5 million years ago. At that time the first humans were making the first tools and discovering fire. This guy was around:
PHOTOS
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