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Proved that Earth is spherical. He said that the sun, moon, planets, and stars travel in separate spheres. He believed that earth is at the center of the universe - Geocentric.
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Compiled the first star catalog. First to come up with equinoxes. He calculated the distance between the Earth and Moon.
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Wrote Almagest a set of astronomy manuals, which catalogues the stars and eclipses the movement of the sun and moon. He made the Geocentric theory or the ptolemaic model, which is about the earth being in the center of the universe.
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He believed that the sun was the center of the universe. It was called the Heliocentric model. He is also the founder of the Scientific Method.
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He is known for accurate, and comprehensive astronomical and planetary observations
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Was a lens maker from Germany. He invented the telescope. Even though he didn't invent the first telescope, he did patent the first three time magnified telescope.
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Discovered that orbits are not circles they are ovals (elliptical.)
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A telescope that uses a converging lense to collect light invented by Hans Lippershey.
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He discovered the division of the rings of Saturn, that Saturn had moons, and the rotation periods of Mars and Jupiter.
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He is from Italy. His discoveries are with one of the first telescopes. He is the first to discover sunspots. He discovered Jupiter’s moons Io, Callisto, Europa, and Ganymede.
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Further developed the works of Copernicus and Kepler using math. Invented reflecting telescope 1688. 3 laws of motion.
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A telescope that used reflecting and that was invented by Isaac Newton
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Discovered the planet Uranus and its moons. He also discovered 2 more of Saturn’s moons. Believed that water was on Mars. He deduced infrared radiation.
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Discovered Pluto and studied “Canalis” on Mars. Built Lowell observatory to study mars.
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One of the inventors of the HR diagram. Hertzsprung_Russel diagram shows correlation between magnitude and spectral type of star.
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Theory of Relativity and aggravation.
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Discovered the universe was expanding. Hubble’s Law.
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Discovered radio waves emanating from the Milky Way. He is one of the founding figures for radio astronomy
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Russia sent out first satellite. This changed America’s education to focus on mainly math and science. Because they beat us to it, we have NASA.
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First human to orbit Earth.
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First US human to orbit Earth. 3x
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First human to walk on the moon.
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A program that was designed to land humans on the earth and bring them back safely. Six missions achieved this goal, 7 and 9 were testing things, 8 and 10 orbited the moon and tested things, and 13 did not land due to malfunction.
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Space Shuttle Columbia was the first reusable spacecraft. Launch like a rocket and land like a plane.
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First ever robotic rover to land on the surface of the red planet.
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A spacecraft that could take accurate measurements and images in a variety of atmospheric conditions and light spectra. It is named after Jean-Dominique Cassini who discovered the Saturn satellites.
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Partially reusable heavy lift launch vehicle that can carry a ton of stuff into space at once.
