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Edwin Hobble also created a classification for galaxies that we astronomers and probably not just astronomers but layman too known as the Hubble sequence. So what I mean when I say sequence, the classification employed is based on the forms of the photographic images blablabla… irregular.
The sequence is composed of two sections: the elliptical nebula and the spirals which merge into one another and I’ll point out this is actually one Hubble setting in the prime focus of the two hundred inch Palomar. So why I don’t want Hubble dead was not only did he proved that things like Andromeda were outside of the Milky Way, he actually was also able to show to classify those galaxies and put those galaxies into a sequence. And unfortunately when he did this back in the day he thought the sequence work this way that the ellipticals became spirals turns out modern time we know that it was the opposite so even if you are Edwin Hubble you make mistakes, take that too when you have to take your SAT
