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made the first star catalog. He was also considered as the greatest astronomer of his time. He was the first to find equinoxes and calculated distance between earth and the moon.
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Wrote almagest which is a catalog of eclipse. His model is the geocentric theory and also called the Ptolemaic model.
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proved Earth was spherical and believed it was the center of the universe he also thought the plants had separate shells and rotated around the earth.
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believed the earth held its place in the center of the universe. Founder of scientific method. Identified the concept of the heliocentric solar system. It was the system in which the sun rather than the earth is the center Helios= “sun”; centric=”center”.
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known for his accurate and comprehensive astronomical and planetary observations.
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Was a lens maker and he made a telescope and put a pentene.
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Tycho's assistant and discovered that the orbit of the planets orbits with the sun at one focus.
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He is from Italy One of his first discovery was the telescope. He also was the first person to find sun spots. He also discovered that the stars weren't on the clear shells like the planets. Found the main moons of Jupiter which are Io, Europa, Ganymede and Calisto.
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further developed works of Copernicus and Kepler using math invented reflecting telescope 1668 and 3 laws of motion.
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discovered the separation of Saturn rings and Saturn's moons.
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Discovered that planet Uranus and its the moons also discover 2 more moons on Saturn believed he found water on earth.
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inventors of his diagram it shows the correlation between the absolute magnitude brightness and the spectral type of star.
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predicted the existence of a planet beyond the orbit of Neptune and ended his research with the discovery of Pluto. And found different
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helped astronomers study everything gravitational waves to mercury's orbit. And Theory of relativity.
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Discover the universe is expanding. Hubble's law was that galaxies are moving away from each other. The idea is the basis of the big bang theory of how universe began.
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in 1931 He discovered that radio waves were emanating from the Milky Way. He was considered one of the founding figures of radio astronomy. Radio waves are the largest type of energy waves.
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Russia sent the first satellite into space to orbit the earth. Putting the soviet union ahead of the U.S. Because they beat us to it the U.S. Mad NASA
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first person to orbit the earth 108 min.
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1st U.S. citizen to orbit earth 3x
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1st U.S. citizen to orbit earth 3x
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Send people to the moon and send them back to earth safely. 6 of his missions made it to and from the moon.
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first person to walk on the moon represents America.
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it was called the Columbia. It launches like a rocket and lands like a plane.
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When it landed it let a rover go and explore mars. This was also a design to demonstrate a new way to deliver an instrumented lander.
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Was the fourth space probe to visit Saturn and the first to enter its orbit
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is a partially reusable heavy-lift launch vehicle designed and manufactured by SpaceX.
