1608: the invention of the telescope
1609: the first telescopes
1609: Galileo's first telescope
1609: Thomas Harriot observes the Moon
1609: In Venice Galileo demonstrates an 8-power telescope
1610: Galileo's discoveries
1610: the Sidereus Nuncius
1610: the 'three-bodied' nature of Saturn
1610: the phases of Venus
1611: Galileo in Rome
1611: Kepler's Dioptrice
1611: Galileo member of the Academy of the Lincei
1612: sunspots
1613: the Istoria e dimostrazioni intorno alle macchie solari
1613: the Disputatio de coelo
1616: Bellarmino's admonition to Galileo
1618: the Telescopium sive ars perficiendi
1621: Snell formulates the law of sines
1623: the Saggiatore
1630: the Rosa Ursina and the Commentationes in motum Terrae diurnum & annuum
1630: the dark bands on Jupiter
1632: the Dialogo sopra i due massimi sistemi del mondo
1633: Galileo's trial
1636: the Harmonie Universelle
1637: the Dioptrique
1639: the micrometer
1642: death of Galileo
1642: the Oculus Enoch et Eliae siue Radius sidereomysticus
1646: the Novae Coelestium Terrestriumque Rerum Observationes
1655: the discovery of Titan
1656: the De Saturni luna observatio nova
1659: the Systema Saturnium
1660: the Brevis annotatio in Systema Saturnium Christani Eugenii
1663: Gregory's telescope
1666: the Theoricae Mediceorum planetarum ex causis physicis deductae
1666: the Martis circa axem proprium revolubilis observationes
1668: Newton's reflecting telescope
1671: the discovery of Iapetus
1671: the second example of Newton's reflecting telescope
1672: Cassegrain's reflecting telescope
1672: the discovery of Rhea
1673: the Horologium oscillatorium sive de motu pendulorum
1684: the discovery of Tethys and Dione
1687: the Philosophiae naturalis principia mathematica
1721: Hadley's reflecting telescope
1729: the achromatic objective