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1612 in science : ウィキペディア英語版 | 1612 in science
The year 1612 in science and technology involved some significant events. ==Astronomy==
* The first description of the Andromeda Galaxy based on observations by telescope is given by Simon Marius. * December 28 – Galileo observes the planet Neptune for the first time when it is in conjunction with Jupiter, but mistakenly catalogues it as a fixed star because of its extremely slow motion along the ecliptic, and it will not be properly identified until 1846.
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