Thursday, January 6, 2022

Hubble Space Telescope image of Jupiter and 3 of the Galilean moons (Europa, Callisto, and Io). Taken in January 2015. On January 7, 1610, Galileo wrote a letter containing the first mention of Jupiter's moons.


https://bit.ly/3qYaVg6 via /r/spaceporn https://bit.ly/3G3zheX

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