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Cake day: March 17th, 2024

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  • Pluto being too small isn’t actually the grounds on which it got demoted. The size requirement is just being massive enough to reach hydrostatic equilibrium - that is, be heavy enough that it’s round. Pluto does meet this one

    The one it fails is clearing its orbit. This basically means being much heavier than everything else in the same orbit. Be gravitationally in charge of your orbit. The other eight are all hundreds if not thousands of times heavier than everything else in their orbit (not including moons, since they’re gravitationally bound to the planet anyway), whereas Pluto is less than a tenth of the total mass in its own orbit. Ceres is actually more gravitationally dominant over its orbit than that, although still nowhere near the eight planets.

    This one sounds a bit weird at first, but I kinda like how it has such a massive delineation between the things we instinctively think of as planets and everything else.














  • I’m afraid I am completely unqualified to answer this beyond that Irene’s reign was a very messy one, ending with a rebellion against her. Her own son (the legal heir to the throne for who she was originally just regent) also rebelled against her earlier, and she had his eyes put out. It seems to me like Irene specifically was just absolutely ruthless enough to get past whatever societal rules may have been levelled against her