Nicolas Copernicus (1473-1543) is generally credited with changing the model of the Solar System to one with the Sun at the centre. Detailed observations with telescopes have given us evidence ...
TIMHi, I'm Tim Peake. I'm an astronaut based here at the European Space Agency in Germany, and from December 2015, to June 2016, I spent six months orbiting Earth on the International Space Station.
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