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Greek astronomer that believed that the earth was spherical along with other planets. And that earth was the center of the universe. He believed that the sun and moon orbited the earth. Also believed that the planets were connected to an invisible shell surrounding earth that moved.
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Greek astronomer and mathematician that calculated the distance from the earth to the moon.
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Wrote a book called the Almagest that was a catalog of stars and eclipses.
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Formulated a heliocentric model of the universe in which the sun is centered instead of the earth.
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A Danish astronomer that believed the moon orbited the earth. Had the most comprehensive and accurate space timings of his time.
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An Italian that discovered Jupiter's moons, Io, Europa, Callisto Ganymede. Studied gravity velocity, and fall speed. Same as heliocentric. Discovered sunspots and proved stars aren't fixed to invisible shells.
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First to apply for a patent for a telescope, 3x magnification, lens maker.
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Tycho Brahe’s assistant. Discovered that the orbit of the planets are not circular, but elliptical. (oval)
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Uses a lens as its objective to form an image rather than a curved mirror.
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Italian who discovered 4 new moons orbiting saturn, noted the divisions of rings for Saturn, and the rotation periods of Mars and Jupiter.
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Formulated the 3 laws of motion, built the first reflecting telescope and furthered developed the works of copernicus and kepler.
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Uses a curved mirror to reflect light and form an image rather than a lens.
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Pioneered the use of astronomical spectrophotometry, discovered Uranus and its moons, 2 more of Saturn's moons found polar ice on mars leading to studies to find water on mars, and that the nebulae in the Messier catalog were clusters of stars.
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Speculated that there are canals on mars and discovered Pluto.
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Danish chemist that developed the Hertzsprung–Russell diagram. determined the distances to several Cepheid variable stars.
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Developed the theory of relativity and gravitation, discovered the law of the photoelectric effect, made the concept of mass energy.
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American discovered the universe is expanding using the color of the stars. Hubble’s law, galaxies are moving away from each other. The basis of the Big Bang Theory.
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American discovered radio waves emanating from the Milky Way.
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First American to orbit the Earth. (3 times) In 1961
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First man on the moon in 1968
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A Soviet pilot and cosmonaut. He was the first human to journey into outer space and orbit earth.
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The first ever satellite that was made by the Soviet Union that put the Soviet Union ahead of the United States. Science and space travel became a new priority for the U.S. and the educational system. In 1958 President Dwight Eisenhower created NASA and began the Space Race.
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Missions directed towards getting on the moon and getting back safely.
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(AKA STS-1) First American manned space flight since 1975
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The first robotic rover on Mars.
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Orbiter named after the person who discovered Saturn. An orbiter of Saturn.
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The most powerful rocket in the world. Heavy lift launch vehicle that took a Tesla Roadster to space.
