And Titan is 6% bigger than Mercury.
Comment on Pluto is still a planet, just a dwarf one
frog@feddit.uk 1 day agoThe Earth’s Moon is about 1.5 times bigger than Pluto.
ParlimentOfDoom@piefed.zip 16 hours ago
mrsemi@lemmy.world 1 day ago
in Asimov’s Foundation series, there is (was) a galaxy-spanning human civilization, but Earth was lost and mostly considered mythical. One of the arguments against it actually existing was the absurdity of such a double planet system existing. In the wider galaxy only giant planets had such large satellites.
a_non_monotonic_function@lemmy.world 1 day ago
In his books were they similarly absurdly tiny, rotating in irregular orbits well outside of their class of planets, and inhabiting an entire solar system of similarly sized unremarkable objects?
bob_lemon@feddit.org 5 hours ago
And the 2006 decimation of planet that made Pluto not a planet explicitly added “must not orbit another object” to stop the moon from being a planet.