Uploaded January 2023 | Updated September 2026, 2 weeks ago

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You might be pretty confident that when a moon is there it’s there to stay, but that’s not always the case. Moons may have a history of disappearing.

Hosted by: Savannah Geary (they/them)

Correction:
05:19 Well, this is half right. The moons don't actually orbit the same distance from Mars and orbit on opposite sides of the synchronous radius. Sorry about the mistake!

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Sources:
solarsystem.nasa.gov/moons/saturn-moons/overview
solarsystem.nasa.gov/planets/saturn/in-depth/#otp_rings
solarsystem.nasa.gov/missions/cassini/overview
https://news.berkeley.edu/2019/01/17/saturn-hasnt-always-had-rings/
science.org/doi/10.1126/science.aat2965
science.org/doi/10.1126/science.abn1234
nature.com/articles/s41550-020-01284-x

solarsystem.nasa.gov/moons/jupiter-moons/overview
universetoday.com/44796/galilean-moons
arxiv.org/pdf/0812.4995.pdf
arxiv.org/abs/1801.06094
arxiv.org/pdf/1909.00285.pdf

nature.com/articles/s41550-021-01306-2
iopscience.iop.org/article/10.3847/PSJ/ac88d2

Image Sources:
gettyimages.com/detail/video/adult-woman-dropping-all-stuff-out-from-bag-searching-stock-footage/1358112445
gettyimages.com/detail/video/twinkling-stars-motion-graphics-with-night-background-stock-footage/1355123496
gettyimages.com/detail/illustration/realistic-full-moon-royalty-free-illustration/1318457488
gettyimages.com/detail/video/saturn-is-a-huge-planet-of-the-solar-system-with-stock-footage/1323556900
gettyimages.com/detail/video/cassini-spacecraft-next-to-saturn-stock-footage/507622466
commons.wikimedia.org/wiki/File:Saturn_from_Cassini_Orbiter_(2004-10-06).jpg
solarsystem.nasa.gov/resources/657/a-farewell-to-saturn/?category=planets_saturn
solarsystem.nasa.gov/resources/209/surge-in-the-ring/?category=planets_saturn
solarsystem.nasa.gov/resources/17849/translucent-arcs/?category=planets_saturn
solarsystem.nasa.gov/resources/2490/saturns-rings-shine-in-hubble-portrait/?category=planets_saturn
solarsystem.nasa.gov/resources/2486/hubbles-new-portrait-of-jupiter/?category=planets_jupiter
youtube.com/watch?v=xh3EKDghbuU
photojournal.jpl.nasa.gov/catalog/PIA00600
gettyimages.com/detail/video/ice-moon-europa-on-the-background-of-the-large-gas-stock-footage/1184147596
gettyimages.com/detail/video/approaching-jupiter-stock-footage/902728712
en.wikipedia.org/wiki/File:Francisco_de_Goya,_Saturno_devorando_a_su_hijo_(1819-1823).jpg
commons.wikimedia.org/wiki/File:Terrestrial_planet_sizes2.jpg
commons.wikimedia.org/wiki/File:Phobos_deimos_diff.jpg
gettyimages.com/detail/video/space-background-valles-marineris-in-mars-stock-footage/1373047089
gettyimages.com/detail/photo/planet-mars-with-it-moons-phobos-and-deimos-royalty-free-image/912255196
solarsystem.nasa.gov/resources/2273/hubble-sees-phobos-orbiting-mars/?category=planets_mars
gettyimages.com/detail/video/close-up-fly-by-of-the-planet-saturn-stock-footage/91809141
gettyimages.com/detail/video/jupiter-in-open-space-stock-footage/1203912979
gettyimages.com/detail/video/orbiting-planet-mars-high-quality-4k-cg-animation-stock-footage/1169225320
gettyimages.com/detail/video/full-moon-and-leaves-stock-footage/1414640278