8 October
1873: On 8 October 1873, Ejnar Hertzsprung was born.Hertzsprung was a Danish astronomer who classified types of stars by relating their surface temperature (or colour) to their absolute brightness.A few ...
27 FEB. 2004
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1873: On 9 October 1873, Karl Schwarzschild was born.
Schwarzschild was a German theoretical astrophysicist who made both practical and theoretical contributions to 20th century astronomy.
He developed the use of photography for measuring variable stars. While on the Russian front during military service, he computed the first two exact solutions of the Einstein Field Equations of General Relativity, which led directly to modern research on black holes.
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7 October
2002: On 7 October 2002, the Integral logo was fixed to the side of the Proton rocket due to launch ESA's Integral mission later in the month.Located at the Baikonur ...
6 October
1990: On 6 October 1990, the ESA/NASA Ulysses spacecraft was launched on board US Space Shuttle Discovery from Cape Canaveral, USA.Ulysses is a ESA/NASA mission to study the poles of ...
5 October
1923: On 5 October 1923, the US astronomer Edwin Hubble identified the first Cepheid variable star in the Andromeda galaxy. This proved that the galaxy was not part of the ...
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