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1630 in science
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==Astronomy== * Following his recently completed [[Rudolphine Tables]], [[Kepler]] predicts a [[transit of Mercury]] on 7 November 1631 and a [[transit of Venus]] on 6 December 1631. He writes an "admonition" to astronomers to prepare for observations on these dates, which is published after his death by Jacob Bartsch.<ref>{{cite journal |title=The Importance of the Transit of Mercury of 1631 |last=van Helden |first=Albert |journal=Journal for the History of Astronomy |volume=7 |page=1 |date=1976 |doi=10.1177/002182867600700101 |bibcode=1976JHA.....7....1V |s2cid=22091697}}</ref>
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