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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931795 11/25/19 09:11 AM
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On this day in 1885 - November 27th - the first known photograph of a meteor was taken.

Austro-Hungarian astronomer Ladislaus Weinek caught a 7mm-long trail at his Prague observing station during the Andromedid meteor shower. (Since the 19th century the Andromedids have faded so much that they're no longer generally visible to the naked eye.)


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931797 11/26/19 05:37 AM
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On this day in 1971 - November 27th - the Soviet Mars 2 probe became the first man-made object to reach the surface of Mars.

However it wasn't the first successful mission, because the landing system failed and the lander was lost.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931801 11/27/19 02:35 PM
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On this day in 1964 - November 28th - NASA's Mariner 4 was launched.

The spacecraft made the first successful flyby of the planet Mars, returning the first pictures of the Martian surface. They were the first images of another planet ever returned from deep space.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931804 11/28/19 11:41 AM
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On this day in 2017 - November 28th - the Voyager team completed a successful test of Voyager 1's trajectory correction maneuver (TCM) thrusters.

Before that the last time the backup thrusters were fired up was in November 1980. The team thinks that successful use of the TCM thrusters will extend the mission by an additional two to three years. Voyager 1 is now in interstellar space, and light or radio signals take nearly 21 hours to reach Earth from there.



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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931810 11/29/19 10:59 AM
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On this day in 1967 - November 28th - the first pulsar was observed by Jocelyn Bell Burnell and Antony Hewish at the Mullard Radio Astronomy Observatory, Cambridge, England.

A pulsar is a rapidly rotating neutron star, but at the time no one knew this. A neutron star was still a theoretical construct whose existence wasn't accepted by many astronomers.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931811 11/30/19 11:35 AM
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On this day in 1967 - November 29th - Australia became the 4th nation to launch a satellite from its own territory.

The satellite (Wresat) was a joint venture of the Weapons Research Establishment and the University of Adelaide's Physics Department. It collected and sent back data about the composition of the upper atmosphere for 73 orbits.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931812 11/30/19 04:28 PM
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On this day in 1609 - November 30th - Galileo Galilei made his first detailed observations of the Moon using a telescope.

Using a telescope with 20x magnification he examined and drew the Moon from 30 November to 18 December.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931814 12/01/19 10:36 AM
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On this day in 2013 - December 1st - China's Chang'e-3 spacecraft was launched to Moon.

It was a lander and a rover Yutu which would be deployed for a time on the lunar surface.



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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931822 12/02/19 09:48 AM
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On this day in 1995 - December 2nd - the NASA/ESA Solar and Heliospheric Observatory was launched.

It was originally planned as a two-year mission, but it's still providing essential data about the Sun and space weather.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931823 12/02/19 09:52 AM
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On this day in 1993 - December 2nd - the first Hubble Space Telescope servicing mission was launched.

The crew of the Space Shuttle Endeavour went to the telescope with a new main camera and a corrective optic package to restore the telescope's blurred vision.


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