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1 janv. 1783 - William Hershel, a British Astronomer, measures Mars' axial tilt with his reflecting telescopes. He also believes the planet has polar ice caps.
Ajouté au bande de temps:
28 janv. 2018
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History of Mars by Juan Centeno
Date:
1 janv. 1783
Maintenaint
~ Il y a 241 ans
Les images: