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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931829 12/03/19 03:43 PM
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On this day in 2014 - December 3rd - the Japanese spacecraft Hayabusa 2 was launched.

Hayabusa 2 is an asteroid sample-return mission which rendezvoused with near-Earth asteroid 162173 Ryugu in June 2018.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931835 12/04/19 09:21 AM
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On this day in 2015 - December 3rd - ESA's LISA Pathfinder mission was launched.

LISA (Laser Interferometer Space Antenna) Pathfinder tested technology for a future spaceborne observatory for gravitational waves.



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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931836 12/04/19 09:54 AM
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On this day in 1639 - December 4th - Jeremiah Horrocks and William Crabtree in England became the first people ever to observe a transit of Venus.

Horrocks predicted the transit based on his own corrections to Kepler's Rudolphine Tables.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931841 12/05/19 01:48 PM
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On this day in 1997 - December 4th - NASA's Mars Pathfinder was launched.

Mars Pathfinder was a robotic spacecraft that landed a base station (named the Carl Sagan Memorial Station) and Sojourner, the first roving probe on Mars.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931842 12/05/19 01:51 PM
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On this day in 1968 - December 6th - ESRO (a precursor to the European Space Agency) had its Highly Eccentric Orbit Satellite (HEOS-1) launched from Cape Kennedy.

It was the first European satellite to venture beyond near-Earth space, to study magnetic fields, radiation and the solar wind. This required an orbit stretching two-thirds of the way to the Moon.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931843 12/06/19 08:40 AM
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On this day in 1908 - December 6th - the Unity and Zarya modules were connected to form the core of the International Space Station (ISS).


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931844 12/06/19 08:47 AM
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On this day in 1676 - December 7th - the first news was published of Danish astronomer Ole Rømer's measurement of the speed of light.

Rømer's work was based on observations of the eclipses of the moons of Jupiter. At that time not everyone was convinced that light even had a finite speed.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931847 12/07/19 08:56 AM
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On this day in 1905 - December 7th - Gerard Kuiper was born.

The Dutch-American astronomer is considered by many to be the father of modern planetary science.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931848 12/07/19 08:59 AM
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On this day in 1995 - December 7th - NASA's Galileo spacecraft entered Jupiter's atmosphere and began its prime mission.

Galileo was the first spacecraft to orbit Jupiter, though others had done fly-bys of the giant planet.


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Re: 2019: On this day . . . [Re: Mona - Astronomy] #931850 12/08/19 09:02 AM
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On this day in 2010 - December 8th - SpaceX Dragon 1 was launched, the first private spacecraft recovered from orbit.


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