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proved that the Earth is spherical; believed that it was at the center of the universe
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Wrote the first star catalog and categorized the brightness of stars. Calculated the distance from the moon to Earth correctly.
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Created geocentric theory. Created an eclipse catalog.
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Created Heliocentric theory. Founded scientific method.
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created an observatory. Accurate and comprehensive measurements of planetary objects.
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made his own telescope. He saw the craters, mountains, and valleys of the Moon, noticed the huge number of stars making up the Milky Way, kept precise records of sunspot activity and the phases of Venus, and discovered four moons orbiting Jupiter. publicized the fact that other astronomical bodies, such as Jupiter's moons, were clearly revolving around something other than the Earth
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patented the telescope
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planets orbit in oval
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Discovered divisions in between saturn's rings. Found rotation period of mars and Jupiter.
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Invented reflecting telescope, three laws of motion
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discovered uranus and light temperatures.
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discovered pluto. Built flagstaff observatory
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studied mercury's orbit and gravity.
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Discovered the radio waves are emanating from space. Radio waves
are the longest type of energy waves. -
1st U.S. Citizen to orbit Earth
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first human to walk on the moon
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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 is the basis of the Big Bang
Theory of how the universe began. -
The importance of Sputnik to the U.S. In the midst of the Cold War, Russia was successful in launching the first satellite into space to orbit Earth. Putting 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 (National Aeronautics and Space Admin. The Space Race.
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First human (Soviet) to orbit Earth
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The Apollo program was designed to land humans on the Moon and bring them safely back to Earth. Six of the missions achieved this goal. Apollo 13 did not land on the Moon due to a malfunction, but also returned photographs. The six missions that landed on the Moon returned a wealth of scientific data and almost 400 kilograms of lunar samples. Experiments included soil mechanics, meteoroids, seismic, heat flow, lunar ranging, magnetic fields, and solar wind experiments.
