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1 gen 1830 anni - Johann Henrich Maedler, schoolteacher, and Willhelm Beer, banker. begin developing images geological surface features of Mars.
Aggiunto al nastro di tempo:
28 gen 2018
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History of Mars by Juan Centeno
Data:
1 gen 1830 anni
Adesso
~ 194 years ago
Immagini:
