system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 - How do gas giants not have a surface? Where do asteroids and comets go when they get sucked in? What’s at the center of a gas giant?

This has always baffled me. I can’t really understand how they could just not have a surface no matter how far down you go. Obviously gravity has to pull the gasses together into some more dense form eventually… right?
gpt
It's still solid in the core. There just is no surface because there's no point you can point to and say "yeah that's where it gets solid". It gradually gets denser and denser as you get closer to the core. Asteroid and whatnot burn and slow down till they stop as it gets too thick for them to move.