23 November
1935: On 23 November 1935, Vladislav Nikolayevich Volkov was born.Volkov was a Soviet cosmonaut who flew as flight engineer on the Soyuz 7 (1969) and Soyuz 11 (1971) missions. Soyuz ...
27 HELMI. 2004
Julkaisupäivä
1895
Katselukerrat
1639: On 24 November 1639, Jeremiah Horrocks, an English astronomer and clergyman, measured a transit of Venus, the first ever to be observed.
Applying Kepler's prediction that in 1631, Venus would transit the Sun, Horrocks calculated that these transits occurred not singly but in pairs eight years apart. Thus, Horrocks prepared his equipment for the next transit he had thus predicted for this day.
His simple telescope was mounted on a wooden beam, so he could project a solar image onto a piece of paper marked with a six inch graduated circle. From this, he made measurements and calculated that the value for the solar parallax was smaller than previously recorded, and so concluded that the Sun was further away from Earth than previously thought.
Mediamodaali
22 November
1944: On 22 November 1944, Sir Arthur Stanley Eddington died.Eddington was an English astronomer, physicist and mathematician. His greatest work was in astrophysics, investigating the motion, internal structure and evolution ...
21 November
1993: On 21 November 1993, Bruno Rossi died.Rossi was an Italian pioneer in the study of cosmic radiation. In the 1930s, his experimental investigations of cosmic rays and their interactions ...
20 November
1889: On 20 November 1889, Edwin Powell Hubble was born.Hubble was an American astronomer who is considered the founder of extragalactic astronomy and who provided the first evidence of the ...
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