Joseph Gaultier De La Vallette
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Joseph Gaultier de la Vallette (24 November 1564, in Rians – 1 December 1647, in
Aix-en-Provence Aix-en-Provence (, , ; oc, label= Provençal, Ais de Provença in classical norm, or in Mistralian norm, ; la, Aquae Sextiae), or simply Aix ( medieval Occitan: ''Aics''), is a city and commune in southern France, about north of Marseille. ...
) was a 17th-century French astronomer. He was a contemporary and friend of
Galileo Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642) was an Italian astronomer, physicist and engineer, sometimes described as a polymath. Commonly referred to as Galileo, his name was pronounced (, ). He was ...
and Peiresc. With Peiresc he observed the
moons of Jupiter There are 82 known moons of Jupiter, not counting a number of moonlets likely shed from the inner moons. All together, they form a satellite system which is called the Jovian system. The most massive of the moons are the four Galilean moons: ...
in November 1610 and earlier that year he had been the second person after Peires to see the
Orion Nebula The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion. It is one of the brightest nebulae and is visible to the naked eye in the nig ...
.


Bibliography

* Mario Biagioli
''Galileo's Instruments of Credit''
2006 * Mario Biagioli
Replication or Monopoly? : The Economies of Invention and Discovery in Galileo's Observations of 1610
*Jürgen Renn
''Galileo in context''
2002


Sources

* Pierre Humbert, "Joseph Gaultier de la Vallette, astronome provencal (1564-1647)." ''Revue d'histoire des sciences et de leurs applications'' I (1948) 316. 1564 births 1647 deaths People from Var (department) 16th-century French astronomers 17th-century French astronomers {{france-astronomer-stub