Byron Arango H.

@barangoh

Chem. Eng. Amateur Astronomer, member of ACDA. Compilation of news and comments about Astronomy, Astronautics, Science and Technolgy.

Equinoccio: El Sol de Solsticio a Solsticio

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1466 days ago

Equinoccio: El Sol de Solsticio a Solsticio

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