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1 janv. 1877 - Asaph Hall

Description:

Asaph Hall discovered the two moons of Mars, later named Deimos and Phobos. Further refined maps were published with greater detail.

Ajouté au bande de temps:

Mars: A Timeline of Observation

ByMoses Havel
29 janv. 2018

Date:

1 janv. 1877
Maintenaint
~ Il y a 147 ans

Les images:

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