Astronomy

March 8–May 15 - Johannes Kepler formulates the third law of planetary motion.[1]
July 20 - Pluto (not known at this time) reaches an aphelion.
Johann Baptist Cysat, Swiss Jesuit geometer and astronomer and one of Christoph Scheiner's pupils, becomes the first to study a comet through the telescope and gives the first description of the nucleus and coma of a comet.

Medicine

The College of Physicians of London publishes the Pharmacopœia Londinensis.[2]

1618 Birth of Jeremiah Horrocks

1618 Birth of Francesco Maria Grimaldi

Deaths

June 6 - Sir James Lancaster, English navigator (b. 1554)
October 29 - Walter Ralegh, English explorer (b. c.1554)
Luca Valerio, Italian mathematician (b. 1553)

References

^ Miller, Arthur I. (2009). Deciphering the cosmic number: the strange friendship of Wolfgang Pauli and Carl Jung. New York: W. W. Norton & Co.. p. 80. ISBN 9780393065329. Retrieved March 7, 2011.
^ Medicorum Collegij Londinensis. Pharmacopœia Londinensis in qua medicamenta antiqua et nova vsitatissima, sedulò collecta, accuratissimè examinata, quotidiana experientia confirmata describuntur. Opera Medicorum Collegij Londinensis. Ex serenissimi Regis mandato cum R.M. Priuilegio. Printed by Edwardus Griffin for Iohannis Marriot. See: "Treasures of the Royal Pharmaceutical Society's collections: Pharmacopoeia Londinensis 1618 (The London Pharmacopoeia)". The Pharmaceutical Journal (London: Royal Pharmaceutical Society of Great Britain) 273: 299. 2004-08-28. ISSN 0031-6873.

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