Draft that a letter come Leonardo Donato, Doge that Venice, August, 1609, and also Notes ~ above the Moons that Jupiter, January 1610. Credit: university of Michigan special Collections Library

Born in 1564, Italian astronomer Galileo Galilei's monitorings of our solar system and also the Milky way have revolutionized our knowledge of our ar in the Universe.

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Galileo sparked the birth of modern astronomy v his monitorings of the Moon, phases the Venus, moons approximately Jupiter, sunspots, and the news that seemingly numerous individual stars comprise the Milky way Galaxy. If Galileo were approximately today, he would surely it is in amazed in ~ katifund.org's exploration of ours solar system and beyond.

After discovering of the newly created "spyglass," a device that made far objects appear closer, Galileo soon identified how the worked and built his own, enhanced version. In 1609, utilizing this at an early stage version of the telescope, Galileo became the an initial person come record observations of the skies made v the help of a telescope. He quickly made his very first astronomical discovery.

At the time, many scientists believed that the Moon to be a smooth sphere, but Galileo uncovered that the Moon has mountains, pits, and also other features, as with the Earth.

When Galileo sharp his telescope in ~ Jupiter, the largest planet in our solar system, that made a startling discovery. The world had four "stars" neighboring it. In ~ days, Galileo determined that these "stars" were actually moons in orbit of Jupiter. His discovery tested common ideas of his time around the bodies of our solar system. Proceeding Galileo's legacy, modern-day telescopes and an are probes observe the wonders of Jupiter's countless moons. Click below for much more information about space probes that have actually visited and also observed Jupiter.

Galileo turn his gaze towards Venus, the brightest celestial object in the skies - other than the Sun and also the Moon. With his observations of the phases of Venus, Galileo to be able to number out the the planet orbits the Sun, no the planet as to be the common belief in his time.

Curious around the Sun, Galileo offered his telescope to learn more. Not knowing that looking at our very own star would damage his eyesight, Galileo spicy his telescope towards the Sun. He uncovered that the sun has actually sunspots, which appear to it is in dark in color.

Galileo's discoveries about the Moon, Jupiter's moons, Venus, and sunspots sustained the idea the the sun - no the planet - to be the center of the Universe, together was commonly thought at the time. Galileo's job-related laid the structure for today's contemporary space probes and telescopes. Happy date of birth Galileo and also thanks for every the celestial gifts!

In 1989, Galileo Galilei was memorialized v the beginning of a Jupiter-bound room probe bearing his name. Throughout its 14-year voyage, the Galileo room probe and also its detachable mini-probe, went to Venus, Earth, the asteroid Gaspra, observed the impact of Comet Shoemaker-Levy 9 top top Jupiter, Jupiter, Europa, Callisto, IO, and Amalthea.

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In order to prevent the feasible contamination of one of Jupiter's moons, the Galileo room probe was intentionally crashed right into Jupiter in ~ the finish of the mission in September 2003.