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(384 BC- 322 BC)Found his own school, Platonic academy.
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(190 BC- 120 BC) Founder of the trigonometry, famous for his discovery of precession of the equinoxes.
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(100-170) Geocentric is a description of the universe and the earth is in the center.
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(1472-1542)Proposed everything evolved around the sun. Came up with the heliocentric model. The heliocentric model where the sun is in the center and all the planets are evolving around it. Named by the heliocentric orbit.
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Known for his accurate and comprehensive astronomical instruments and planetary observations. Recorded data on the motion of the sun, moons and planets and moon relative to fixed stars within 1 arc minute.
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(1570-1619) Was a glasses maker, used lens to make 3x magnification telescope called the refracting telescope
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first type of optical telescope that bends the image. Different than the reflecting telescope because this one uses 2 lenses instead of 2 mirrors.
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(1571-1630) Brahe's assistant developed 3 laws that described the motion of the planets across the sky. With the sun at the focus all the planets move in an elliptical orbits.
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(1564-1642) Invented the first version of the telescope, discovered the 4 Galileo moons (Lo, Europa, Ganymede, Callisto). Discovered sunspots and that the stars not fixed to celestial sphere.
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(1625-1712) Discovered the divisions of the rings of Saturn.
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Used to determine latitude of a ship at sea.
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(1643-1727) invented the reflecting telescope in 1668, known for his work on gravity and 3 laws of motion.
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Uses 2 curved mirrors than reflect the light. different from the refracting telescope because this one uses mirrors instead of lens.
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(1738-1822) discovered the planet Uranus and lots of moons. Formed the theory of stellar evolution and 2 of Saturn's moons. discovered that you can bend colors into there light. (prism)
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(1855-1916) discovered the planet Pluto and studied "canalis". Moved to Flagstaff AZ to study Mars.
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(1889-1953) Established the fields of extragalactic astronomy, discovered that the universe is expanding. Developed the big bang theory.
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(1905-1950) discovered that radio waves are emanating from space. Radio waves are the longest form of waves.
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(1873-1977) Classified stars by their color and brightness with the HR diagram, made his diagram with his partner with the last name of Russell.
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(1873-1977) Theory of relativity and gravitation.
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the very first satellite into space to orbit the earth Russia sent it, this was not good to the United States because that meant that they are higher in technology so that's why the U.S started NASA.
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was the first human to travel to space.
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first American to orbit the earth, and did it 3 times.
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Program made to land humans on the moon safely.
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The first person to walk on the moon.
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robotic spacecraft from america that landed in mars.
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NASA, the European space agency and the Italian space agency sent this probe to study Saturn. Named after Giovanni Cassini.
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Manufactured by SpaceX
