Ancestors

Written by Juan Carlos Muñoz on 2024-12-31 at 19:39

Tired of #NewYear celebrations? It could be worse: on Mercury you'd have to celebrate it twice per day!

After one orbit around the Sun, Mercury has rotated 1.5 times around its axis (relative to distant stars). So it takes another orbit for the Sun to be back again at the same position on the sky. One solar day --> two Mercury years!

📷 Tos

[#]astrodon #astronomy #science #space

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Written by PetterOfCats on 2024-12-31 at 20:44

@astro_jcm should we tell you about Venus….

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Toot

Written by Juan Carlos Muñoz on 2025-01-01 at 10:26

@PetterOfCats There it's a bit better: a year lasts about two solar days.

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Descendants