cross-posted from: https://feddit.org/post/1104168
5 points
fun fact, pluto and charon are technically a binary planet(oid), because the point they orbit is in-between them. (Charon doesn’t orbit Pluto, they both circle empty space)
4 points
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For kids who like a movie reference to rely upon: https://media1.tenor.com/m/jl-z-8otCc0AAAAC/titanic-weee.gif
