There are mods for Seamless Grav Jumps and for Seamless Planet Takeoffs. But when you arrive at a planet in Starfield you still have to choose a landing spot, and then watch a loading screen and an animation. It's another thing that contributes to the feeling your spaceship is more like a house that can teleport.
When you're in space, Starfield's planets are basically just textures you can fly right through if you put in the hours to try it, as Alanah Pearce discovered back when the RPG's boundaries were still being explored. It seemed like one gap modders would never be able to paper over, but Frederik Wessberg has apparently managed it.
The video of his work...
English (US)