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. On this day in 1846 – October 10th – English businessman and amateur astronomer William Lassell discovered Triton, Neptune's largest moon.Lassell discovered the moon just 17 days after German astronomer Johann Galle discovered Neptune, using Urbain LeVerrier's calculations..
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BellaOnline Editor Modern Day Human
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On this day in 1980 – October 10th – the Very Large Array (VLA) was dedicated.
Now known as the Karl G. Janksy Array, it's a prominent radio telescope facility in New Mexico. Jansky was a pioneer of radio astronomy.
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. On this day in 1758 – October 11th – German physician and astronomer Heinrich Olbers was born in Hemelingen, Bremen.Olbers's major discoveries were the asteroids Pallas and Vesta..
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On this day in 1964 – October 12th – the Soviet craft Voskhod 1 was launched.
As the first spacecraft to carry three cosmonauts, this was an advance in manned space flight.
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. On this day in 1884 – October 13th – Greenwich in the United Kingdom was adopted as the prime meridian of the world.There had been many prime meridians in use by countries around the world. But at the International Meridian Conference held in Washington DC, 25 maritime countries voted to adopt the Greenwich meridian as the longitude line of zero degrees..
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On this day in 1993 – October 13th – the British Interplanetary Society was founded in Liverpool, UK by Phillip Cleator.
The society is the oldest space advocacy organisation in the world.
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On this day in 1994 – October 13th – NASA's Magellan mission ended by plunging the spacecraft into Venus.
Magellan - also referred to as the Venus Radar Mapper - was the first interplanetary mission to be launched from the Space Shuttle. It mapped the surface of Venus and measured the planetary gravitational field.
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On this day in 1788 – October 14th – Irish geophysicist, explorer and astronomer Edward Sabine was born in Dublin.
He's best remembered by astronomers for his research into changes in the Earth’s magnetic field, which he eventually recognised as being associated with solar activity. Using pendulum experiments, Sabine also made what was the most accurate determination of the exact shape of the Earth up to that time.
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On this day in 1785 – October 15th – English astronomer James South was born in Southwark, London.
South was an active observer, best remembered for his observation of double stars. He and John Herschel compiled a catalog of the double stars originally observed by William Herschel, and South went on to observe a further 458 double stars. He was awarded both the Gold Medal of the Royal Astronomical Society and the prestigious Copley Medal of the Royal Society.
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. On this day in 1829 – October 15th – American astronomer Asaph Hall was born in Goshen, Connecticut.Hall is best known for his discovery of Phobos and Deimos, the moons of Mars..
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