Urbit moon addresses are 64 bits long, comets are 128 bits long. You need a sponsor to get a moon, you only need a unix computer and a network connection to ge

Urbit moon addresses are 64 bits long, comets are 128 bits long. You need a sponsor to get a moon, you only need a unix computer and a network connection to get a comet. I'm pretty out of touch with Urbit lore, but I'm not aware of anything you can do with a moon that you can't do with a comet. The planet is worth more because it can parent moons and stuff.