7 December
1905: On 7 December 1905, Dutch-American astronomer Gerard P. Kuiper was born in Harenscarpel, the Netherlands.
31 DIC. 2003
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1795: On 8 December 1795, Peter Andreas Hansen was born.
Hansen was a Danish astronomer whose most important work was the improvement of the theories and tables of the orbits of the principal bodies in the Solar System.
The work in celestial mechanics for which he is best known are his theories of motion for comets, minor planets, moons and his lunar tables, published in 1857. He published his lunar theory in Fundamenta ('Foundation') in 1838, and Darlegung ('Explanation') in 1862-64.
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6 December
1631: On 6 December 1631, the transit of Venus occurred as first predicted by Kepler.
5 December
1973: On 5 December 1973, the US Pioneer 10 spacecraft passed within 130 354 kilometres of Jupiter.
4 December
1998: On 4 December 1988, the 13th flight of the Space Shuttle Endeavour was launched.
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