Mastodawn

The #Voyager1 spacecraft took photos in 1979 on #ThisDayInHistory that proved the existence of #volcanoes on #Io, the innermost of the four #GalileanMoons of #Jupiter. Proximity to #Europa & #Ganymede force an orbital eccentricity that then creates tidal heating of Io's interior.

Liam O'Mara IV, PhD Mar 2

Many moons of the Outer Planets have subsurface oceans, suggesting possible life & habitability. On #ThisDayInHistory in 1998, the #Galileo mission showed #Europa has a salty ocean. #Ganymede & #Enceladus are now confirmed to have them; #Titan, #Callisto, & #Triton are likely.

Fabrizio Musacchio Feb 22

✨🔭 New observations of #Ganymede 🌖reveal a surprising similarity between the #auroras 🌌 on the #SolarSystem's largest #moon and those on #Earth 🌍. A team of space physicists has obtained new results suggesting that the fundamental physical processes that generate auroras are common to different celestial bodies.

🌍 https://www.researchgate.net/publication/400351529_Juno's_high-spatial-resolution_ultraviolet_observations_of_Ganymede's_auroral_patches_Constraints_on_the_magnetospheric_source_region

#auroq #SpacePhysics #Jupiter #PlasmaPhysics #Juno #JunoSpacecraft #magnetosphere

Thanks @Umbertogaetani for sharing 🙏 https://mastodon.uno/@Umbertogaetani/116113873863038999

Daniel Fischer Feb 19

Juno's high-spatial-resolution ultraviolet observations of Ganymede's auroral patches - constraints on the magnetospheric source region: https://www.researchgate.net/publication/400351529_Juno's_high-spatial-resolution_ultraviolet_observations_of_Ganymede's_auroral_patches_Constraints_on_the_magnetospheric_source_region -> University of Liège Scientists Reveal Similarities Between Auroras on #Ganymede and Earth: https://www.missionjuno.swri.edu/news/university-of-liege-scientists-reveal-similarities

damian entwistle Feb 18

Today's Flickr photo with the most hits was taken in Naples' Archaeology Museum: Zeus (in the form of an eagle) and Ganymede.

#Naples #ArchaeologicalMuseum #zeus #ganymede

damian entwistle Feb 18

Today's poem:

Ganymede
- by Goethe

https://www.tumblr.com/ukdamo/808899020098502656/ganymede?source=share

#Goethe #zeus #poetry #ganymede #abduction #rape #devotion #aspiration #yearning

Post by @ukdamo

💬 0 🔁 0 ❤️ 0 · Ganymede · Goethe How, in the light of morning, Round me thou glowest, Spring, thou beloved one! With thousand-varying loving bliss The sacred emotions Born of thy warmth eternal…

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Antinous the Gay God Jan 28

🪷 On 29 Jan, we commemorate the discovery in 131 AD of the #StarOfAntinous. #Hadrian saw a new star in #Ganymede constellation, which was renamed for #Antinous. #AntoniusSubia offers this meditation on the meaning of the Star of #Antinous for us today: https://antinousstars.blogspot.com/2026/01/the-sacred-star-of-antinous.html 🪷

Antinous the Gay God Jan 28

🪷 On 29 January 131 AD #Hadrian discovered the Star of Antinous. Comet? Supernova? No one knows. We know only that he renamed the #Ganymede constellation for #Antinous. In fixed-star astrology, the #StarOfAntinous must be located at 21 degrees #Capricorn: https://www.antinopolis.org/hernestus/fixedstarantinous.html 🪷

Antinous the Gay God Jan 21

🪷 On 21 Jan, the Sun enters #Aquarius, sign of the Cupbearer. #Antinous was called the new #Ganymede because both were from Asia Minor, and both were swept to lofty heights. The Constellation of #Ganymedes was renamed for #Antinoos. Full details here: https://antinousstars.blogspot.com/2026/01/the-assumption-of-ganymede.html 🪷

jdmccafferty Jan 7

7 Jan 1610: Galileo Galilei spots 4 'stars' near #Jupiter #otd.

He deduces some days later they are the moons now known as: #Ganymede, #Callisto, #Io, #Europa