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a telescope
In 1925, Edwin Hubble discover cepheid variable(s) in what we now call the Andromeda Galaxy. From those he could tell that the group of stars was too far away to be part of the Milky Way. It was the first proof that other galaxies exist.
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoThe first galaxy determined to not be part of the Milky Way Galaxy is the Andromeda Galaxy. The distinction between the two galaxies was made by Edwin Hubble in 1923.
Wiki User
∙ 14y agoNo one can be said to have discovered the galaxies. Some galaxies are visible with the naked eye and would have seen by the first people to look up into the sky.
Wiki User
∙ 12y agoImpossible to say. Our Milky Way was certainly one of the first, if not the first, but given the period, no one can give a definitive date or time lime of the fist galaxy.
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