Johannes Kepler
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Johannes Kepler was a German polymath who was an astronomer, mathematician, astrologer, natural philosopher and music theorist. He is a key figure in the 17th-century Scientific Revolution, best known
Portrait, c. 1910, after 1620 original
Kepler's birthplace, in Weil der Stadt, Germany
Oil on copper portraits of Kepler and his wife, c. 1600
House of Kepler and Barbara Müller in Gössendorf, near Graz (1597–1599)
Galileo Galilei
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Galileo di Vincenzo Bonaiuti de' Galilei, commonly referred to as Galileo Galilei or mononymously as Galileo, was an Italian astronomer, physicist, engineer and polymath. He was born in Pisa, then par
Johannes Kepler
…telescope, the Keplerian telescope, which became the foundation of the modern refracting telescope, while also improving on the telescope design by Galileo Galilei, who mentioned Kepler's discoveries in his work. He postulated the Kepler conjecture. Kepler influenced among others Isaac Newton, providing one of the…
Portrait c. 1640
Portrait believed to be of Galileo's elder daughter Virginia, who was particularly devoted to her father
"Cannocchiali" telescopes at the Museo Galileo, Florence, suspected to be Galilean telescopes (top: 1610–1630; bottom: 1609–1640)
An illustration of the Moon from Sidereus Nuncius, published in Venice, 1610