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Galilean telescope, instrument for viewing distant objects, named after the great Italian scientist Galileo Galilei (1564–1642), who first constructed one in 1609. With it, he discovered Jupiter’s four largest satellites, spots on the Sun, phases of Venus, and hills and valleys on the Moon.
Jul 13, 2016 · What is Galileo’s Telescope? In 1610, Italian astronomer Galileo Galilei looked up at the heavens using a telescope of his making. And what he saw would forever revolutionize the field of...
The story of Galileo's telescopic observations illustrates how a tool for seeing and collecting evidence can dramatically change our understanding of the cosmos. Early telescopes were primarily used for making Earth-bound observations, such as surveying and military tactics.
Mar 13, 2018 · Galileo turned his telescope to the Milky Way and discovered that it consisted of a vast number of stars, each too faint to be seen individually with the naked eye. When viewed from Earth these stars are so closely packed together they appear to be clouds.
Apr 3, 2014 · Galileo was an Italian scientist and scholar whose inventions included the telescope. His discoveries laid the foundation for modern physics and astronomy.
Sep 5, 2023 · Galileo Galilei (1564-1642) was an Italian mathematician, physicist, astronomer, and natural philosopher. He created a superior telescope with which he made new observations of the night sky, notably that the surface of the Moon has mountains, that Jupiter has four satellite moons, and that the sunspots of the Sun, under careful observation ...
Jul 29, 2024 · Galileo's telescopes. Two of Galileo's first telescopes; in the Museo Galileo, Florence. Galileo's illustrations of the Moon. Galileo's sepia wash studies of the Moon, 1609; in the Biblioteca Nazionale, Florence. (more) Galileo Galilei: Copernican system.
Jan 9, 2020 · Peering through his newly-improved 20-power homemade telescope at the planet Jupiter on Jan. 7, 1610, Italian astronomer Galileo Galilei noticed three other points of light near the planet, at first believing them to be distant stars.
Galileo's refractor and Newton's reflector remain the two standard kinds of optical telescopes today. Learn more about these two types of telescopes.
Jul 23, 2010 · Galileo invented an improved telescope that let him observe and describe the moons of Jupiter, the rings of Saturn, the phases of Venus, sunspots and the rugged lunar surface.
