On this day in 2005 – December 28th – GIOVE-A, the first Galileo satnav system satellite, was launched.
Galileo is Europe’s global navigation satellite system, developed under a partnership between the European Space Agency (ESA) and the European Commission (EC).
On this day in 1888 – December 29th – Pioneering Welsh astrophotographer Isaac Roberts took the first detailed picture of another galaxy - the Great Nebula in Andromeda.
On this day in 1864 – December 31st – Robert Grant Aitken was born.
Aitken was an American astronomer of international repute. He was best known for his systematic study of double stars, and served for ten years as chair of the double star committee of the International Astronomical Union.
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