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BellaOnline Editor Modern Day Human
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On this day in 1975 – August 20th – NASA's Viking 1 was launched.
Viking 1 was the first of two spacecraft (along with Viking 2) sent to Mars as part of NASA's Viking program. A year after its launch it became the first spacecraft to land successfully on Mars and perform its mission.
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BellaOnline Editor Modern Day Human
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. On this day in 1977 – August 20th – NASA's Voyager 2 was launched.It visited all four of the Solar System's gas giants and is the only spacecraft to have visited either Uranus or Neptune. In November 2018 it crossed into interstellar space.
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On this day in 1976 – August 22nd – the Soviet Luna 24 mission returned soil samples from the Moon.
These samples were different from the previous sample return missions because they were collected from 2.5 meters below the surface.
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. On this day in 1966 – August 23rd – NASA's Lunar Orbiter 1 took the first picture of the Earth ever taken from the Moon.The spacecraft's primary mission was to photograph smooth areas of the lunar surface for selection and verification of safe landing sites for the Surveyor and Apollo missions.
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. On this day in 2006 – August 24th – a vote by the General Assembly of the International Astronomical Union changed the classification of Pluto from planet to the new category dwarf planet.Two of the reasons for the reclassification were Pluto's small size (smaller than the Moon) and its highly elliptical tilted orbit which overlaps with that of Neptune.
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BellaOnline Editor Modern Day Human
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On this day in 1609 – August 25th – Galileo Galilei made the first recorded demonstration of a telescope.
He demonstrated one he had made to Venetian lawmakers - it had a magnification about 8 or 9.
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. On this day in 1989 – August 25th – NASA's Voyager 2 spacecraft flew past Neptune.Voyager 2 is still the only spacecraft to have visited Neptune.
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On this day in 2003 – August 25th – NASA's Spitzer Space Telescope was launched.
Spitzer was an infrared telescope whose mission ended on January 30, 2020.
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On this day in 1918 – August 26th – Katherine Coleman Goble Johnson was born.
Katherine Johnson was an African-American mathematician whose calculations of orbital mechanics as a NASA employee were important for the success of the first and subsequent U.S. manned spaceflights.
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On this day in 1962 – August 27th – NASA's Mariner 2 spacecraft was launched.
This space probe to Venus was the first robotic space probe to conduct a successful planetary encounter.
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