Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Andromeda Galaxy  ·  M 31  ·  M 32  ·  NGC 221  ·  NGC 224
Andromeda galaxy——Support of "Island universes" hypothesis, 六年之后
Andromeda galaxy——Support of "Island universes" hypothesis
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Andromeda galaxy——Support of "Island universes" hypothesis

Andromeda galaxy——Support of "Island universes" hypothesis, 六年之后
Andromeda galaxy——Support of "Island universes" hypothesis
Powered byPixInsight

Andromeda galaxy——Support of "Island universes" hypothesis

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100 years ago , in the year 1923,Hubble proved conclusively that the so called "andromeda nebulae" were much too distant to be part of the Milky Way,but an entirely separate galaxy located a significant distance from the Milky Way.
Our Mily Way is not the only continent in the whole universe, it's a tiny island like many other galaxies.
I'm gonna make a 2x2 mosaic for M31,this is the first part
M31 VAR.jpgM31 VAR2.jpg

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Andromeda galaxy——Support of "Island universes" hypothesis, 六年之后