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12 fev 1840 ano - Wilhelm Beer and Johann von Maedler determine Mars's rotation period as 24 hours, 37 minutes, and 22.6 seconds.
Descrição:
*exact date unknown*
Adicionado na linha do tempo:
29 jan 2018
0
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444
Mars Timeline
Data:
12 fev 1840 ano
Agora
~ 184 years ago
Imagens: