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1 ene 221 año aC - Planetary conjunctions
Descripción:
Astronomers of Qin dynasty maintained close records of planetary conjunctions, including those of Mars.
Añadido al timeline:
Timeline of Mars Observation and Exploration
By
Alexandra Fustei
29 ene 2018
0
0
526
fecha:
1 ene 221 año aC
Ahora mismo
~ 2246 years ago
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