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1694
Died, Ismael Boulliau, French astronomer (suggested gravity follows an inverse-square law in 1640)

ref: www.messier.seds.org

1872
J. C. Watson discovered asteroid #128 Nemesis.

1892
A. Charlois discovered asteroid #346 Hermentaria.

1905
The first radio set advertised for sale (Telimco for $8.50 in Scientific American) claimed to receive signals up to one mile.

ref: earlyradiohistory.us

1913
Died, Robert S. Ball, Irish mathematician (screw theory), astronomer (tides, Royal Astronomer of Ireland)

ref: www-history.mcs.st-and.ac.uk

1915
Albert Einstein presented the gravitational field equations of general relativity to the Prussian Academy of Sciences.

ref: en.wikipedia.org

1922
G. Van Biesbroeck discovered asteroid #3378.

1926
Born, Poul [William] Anderson, American science fiction author (Tales of the Flying Mountains, Tau Zero), strongly believed human liberty & expansion to space are connected, 7 Hugo & 3 Nebula awards

ref: en.wikipedia.org

1933
L. Boyer discovered asteroids #1295 Deflotte and #1296 Andree.

1933
The first Soviet liquid fuel rocket, GIRD-X, attained an altitude of 80 meters (260 feet).

ref: www.russianspaceweb.com

1940
Born, Reinhard Alfred Furrer PhD (at Woergl, Austria), payload specialist astronaut (STS 61-D; nearly 7d 0.75h in spaceflight) (deceased)
Austrian astronaut Reinhard Furrer PhD, NASA photo S84-47033 (13 December 1984)Source: Wikipedia (www.jsc.nasa.gov unavailable November 2019) Reinhard_Furrer.jpg
Austrian astronaut Reinhard Furrer PhD, NASA photo S84-47033 (13 December 1984)
Source: Wikipedia (www.jsc.nasa.gov unavailable November 2019)

ref: en.wikipedia.org

1972
Died, Henri Coanda, Romanian inventor, aerodynamics pioneer, father of modern jet aircraft

Henri Marie Coanda (7 June 1886 - 25 November 1972) was a Romanian inventor, aerodynamics pioneer and the parent of the modern jet aircraft.

With the support of engineer Gustave Eiffel and aeronautical pioneer Paul Painleve, he began experimenting the aerodynamic techniques: one of this experiments was mounting a device on a train running at 90 km/hour so he could analyze the aerodynamic behavior. Another experiment used a wind tunnel with smoke and an aerodynamical balance to profile wings to be used in designing aircraft. This led to the discovery of the aerodynamic effect now known as the Coanda Effect.

In 1910, using the workshop of Joachim Caproni, he designed, built and piloted the first 'thermojet' powered aircraft, known as the Coanda-1910, which he demonstrated publicly at the second International Aeronautic Salon in Paris. The powerplant used a 4-cylinder piston engine to power a compressor, which fed to two burners for thrust, instead of using a propeller.

ref: en.wikipedia.org

1976
Observed behavior of a Viking 1 radio signal from Mars was cited as evidence in support of Einstein's general theory of relativity.

ref: adsabs.harvard.edu

1979
Z. Vavrova discovered asteroid #3628.

2034
The center-to-center distance between the Earth and Moon will be 356,445 km, less than 356,500 km for the first time in the twenty-first century.

ref: earthsky.org


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