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According to him, the Sun, the Moon, the planets, and the stars travel in separate spheres. When the spheres touch each other, a 'music of the spheres' can be heard. , the great philosopher, proved that the Earth is spherical, and believed that it was at the center of the universe.
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He was a Greek astronomer, geographer, and mathematician. He is considered the founder of trigonometry but is most famous for his incidental discovery of precession of the equinoxes.
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Wrote Almagest a set of astronomy manuals, which catalogues the stars, eclipses, the movement of the sun and moon. He made the geocentric theory or the ptolemaic model, which is about the earth being the center of the universe.
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Mathematician and astronomer. He believed that the sun was the center of the universe. It was called the Heliocentric model. He is also the creator of the Scientific Method.
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Known for his accurate and comprehensive astronomical and planetary observations. Recorded enough data on the motion of sun, planets, and moon relative to the fixed stars and planets to within 1 arc minute.
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He is from Italy. He is the first person to ever discover sunspots. He discovered jupiter's moons, Io, Europa, Ganymede, Callisto.
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Was a lens maker from Germany but moved to the Netherlands. Believed to be the first to apply for a patent for the telescope design of 3x magnification.
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Tycho Brahe’s assistant. Discovered that orbits are not circles but ovals (elliptical).
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Italian who discovered the division of the rings of Saturn. 4 of Saturn's moons, and the rotation periods of mars and jupiter.
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Further developed works of Copernicus and Kepler using math. Invented reflecting telescope. 3 laws of motion.
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Discovered the planet Uranus and its moons. He also discovered 2 more of Saturn's moons Believed to have found polar ice on Mars leading to the studies hoping to find water on mars.
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Discovered the planet Pluto and studied the “canalis” on Mars. Built the Lowell observatory in Flagstaff, AZ to study Mars.
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One of the inventors of the Hertzsprung-Russell diagram. The HR diagram shows the correlation between the absolute magnitude (brightness) and the spectral type of star.
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Theory of Relativity (1905) and aggravation.
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Using the color of the stars, discovered the universe is expanding.
Hubble's Law, galaxies are moving away from each other. The idea of the Big Bang Theory of how the universe began. -
Karl Guthe Jansky was an American physicist and radio engineer who in August 1931 first discovered radio waves emanating from the Milky Way.
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First human (Soviet) to orbit Earth 108 minutes.
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Sputnik 1 was the first artificial Earth satellite. The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957. It was a 58 cm diameter polished metal sphere, with four external radio antennas to broadcast radio pulses.
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1st U.S. Citizen to orbit Earth 3 times.
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The Apollo Program (1963 - 1972) The Apollo program was designed to land humans on the Moon and bring them safely back to Earth. Six of the missions achieved this mission. Apollos 7 and 9 were Earth orbiting missions to test the Command and Lunar Modules, and did not return lunar data. Apollo 8 and 10 tested various components while orbiting the moon. Apollo 13 did not land due to a malfunction.
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First human to walk on the moon.
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Space Shuttle Columbia was the first reusable spacecraft. Launch like a rocket land like a plane.
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Mars Pathfinder was launched December 4, 1996. They landed on Mars in 1997.
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Falcon Heavy' is a partially reusable super heavy-lift launch vehicle designed and manufactured by SpaceX
