25 November
1895: On 25 November 1895, Claude-Louis Mathieu was born.Mathieu was a French astronomer who worked on the determination of the distances of the stars. He began his career as an ...
31 ΔΕΚ. 2003
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1895: On 26 November 1895, Bertil Lindblad was born.
Lindblad was a Swedish astronomer who contributed greatly to the theory of galactic structure and motion and to the methods of determining the absolute magnitude (true brightness, disregarding distance) of distant stars.
He theorised that the areas around the centre of a galaxy revolve and this is why it was flattened. Oort later proved that does indeed happen.
He studied the structure and dynamics of star clusters, estimated the Milky Way's mass, the period of our Sun's orbit and confirmed Harlow Shapley's approximate distance to the centre of our galaxy.
Παράθυρο πολυμέσων
24 November
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 ...
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 ...
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 ...
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