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1 gen 221 anni a. C. - Planetary conjunctions
Descrizione:
Astronomers of Qin dynasty maintained close records of planetary conjunctions, including those of Mars.
Aggiunto al nastro di tempo:
Timeline of Mars Observation and Exploration
By
Alexandra Fustei
29 gen 2018
0
0
526
Data:
1 gen 221 anni a. C.
Adesso
~ 2246 years ago
Geo-marchi:
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