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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931319 07/28/19 11:11 AM
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On this day in 1801 - July 27th - English mathematician and Astronomer Royal Sir George Biddell Airy was born.

He's known for his work on planetary orbits, measuring the mean density of the Earth and, in his role as Astronomer Royal, for establishing the meridian in Greenwich in London that became the prime meridian of the world.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931320 07/28/19 11:16 AM
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On this day in 1635 - July 28th - the English polymath Robert Hooke, often called "England's Leonardo", was born.

Hooke contributed to astronomy, geology, structural engineering, chemistry and physics, helped rebuild London after the Great Fire, and was a renowned experimenter, inventor, musician and artist.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931322 07/29/19 09:00 AM
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On this day in 1851 - July 28th - the first successful photographic image of a solar eclipse, showing the Sun's corona, was made.

The eclipse image was a daguerrotype made by J. Berkowski at the Royal Observatory in Königsberg, Germany (now Kaliningrad, Russia).


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931323 07/30/19 09:55 AM
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On this day in 1919 - July 28th - The International Astronomical Union (IAU) was founded.

Its mission is to promote and safeguard the science of astronomy in all its aspects, including research, communication, education and development, through international cooperation.



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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931326 07/31/19 11:38 AM
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On this day in 1999 - July 31st - NASA's Lunar Prospector mission ended.

The probe investigated the Moon from low polar orbit, among other things mapping surface composition and possible polar ice deposits. The orbiter was deliberately crashed into a crater near the lunar south pole in the hope that it would create a plume in which water could be detected. (It didn't.)




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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931332 08/01/19 08:16 AM
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On this day in 1971 - July 31st - the first vehicle was driven on the Moon.

By using the lunar rover, astronauts Dave Scott and Jim Irwin were able to explore more widely than anyone had before.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931335 08/02/19 08:02 AM
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On this day in 1818 - August 1st - American astronomer Maria Mitchell was born.

She was the first American woman to discover a comet, the first to be a college professor, and the first woman to be elected to scientific societies in the USA.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931336 08/03/19 08:25 AM
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On this day in 1786 - August 1st - German astronomer living in England, Caroline Herschel, discovered her first comet.

In the years from 1786 to 1797 she discovered eight comets.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931337 08/03/19 08:26 PM
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On this day in 2004 - August 3rd - NASA launched the MESSENGER spacecraft to Mercury.

MESSENGER's mission was to study Mercury's chemical composition, geology, and magnetic field.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931338 08/04/19 09:28 AM
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On this day in 2007 - August 4th - the Phoenix Mars Lander was launched.

The program was a partnership of universities in several countries directed by NASA's Jet Propulsion Laboratory. Its purpose was to look for environments suitable for microbial life on Mars.


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