Minecraft Java 1.20 Mods
Browse 104 free mods for Minecraft Java 1.20 — popular picks include IntergalactiCraft : The Sky And Beyond, SpacePvP, Smooth Astronautgaming.
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IntergalactiCraft : The Sky And Beyond
IntergalactiCraft: The Sky and Beyond brings space exploration, over a million new items, slabs, tools, advanced mechanics, revamped terrain, villages, and structures—an expansive overhaul that transforms the game into an endless adventure.
SpacePvP
Unique plugin for battles using /pvp or custom cabins.
Smooth Astronautgaming
This Modpacks Offers Better Peformance, Tweaks, and overall a Better Experience with Minecraft without hopefully lagging.
Origins: Traveling
A datapack for the minecraft origins mod. Adds the custom traveling origin, which uses its spaceship to travel around the world
Ad Astra: Planet Screen Expanded
A scripted expansion of Ad Astra's planet screen.
Wither Storm Sickness Shader
Adds Pinky G. Rocket's "Withered Filter" shader when the player has wither sickness, comes with a photosensitivity mode.
Ancient Tome
Replaces enchanted books in loot chests with ancient tomes to save inventory space while exploring
PLASMAO's PREMIER PACK
Finally, a curated VanillaX experience with space exploration, industrial evolution, creative building, enhanced combat, and more!? Designed to harmonize new, innovative mechanics with the core essence of Minecraft, while remaining both fresh and familiar.
Fast Path Original
You run faster when running on a path (original from planetminecraft)
OpenBucket
Infinite bucket space for water and lava!
Firework Aviators
Boost yourself with the rockets without the Elytras, or at least you will try...
Planetarian Origin
An origin based on a living planet
MAKE YOUR BUILDING LIMIT UP
Think Minecraft doesn't have enough building space? Want to build taller buildings? Try our data pack and you can increase the building limit up to 4064 blocks!!
No Rocket Boosting
A mod that aims to balance elytra by removing rocket boosting and adding back punch bow boosting, toggleable with gamerules
Spacecraft Datapack
a datapack that adds space and almost everything about it to minecraft
Minecraft But Moving Is illegal
When you use W, A, S, D, or SPACE you will instantly die.
V Elevator
V-Elevator - Press Space to go up, Shift to go down!
Luminara
A Sci-Fi SpaceTech mod Inspired By Star Citizen
PSball's Cosmos 1 (AU) to 1,000 (Blocks) Cosmic Horizons Addon
The datapack and resource pack for my addon. It adds many real objects, like the moons in the solar system with a radius over 100 kilometers, as well as rogue planets, with plans to add more exoplanets in the future.
Spacey's better craftables
a mod that adds lost crafting recipes and vanilla plus items! enjoy :)
Crafts And Gunpowder
This mod adds weapons like a rocket launcher and other fun stuff like a tnt
Starlance: Immersive Landing
Removes the Cosmic Horizons destination selector and automatically confirms Origin during Starlance landings.
MultiPlanet
Most powerful translation solution for every minecraft server!
SpaceDuel
An addon for the SpacePvP plugin that adds duels.
Buffed Elytra
The Elytra now loses durability ONLY when using rockets
Point Blank — Frontline Combat Launchers
Point Blank addon that adds bunch of different rocket launchers
Chickenfix
A really hacky workaround for chickens suffocating when growing in a 1x1 space, designed for my fox-based chicken farm (temporary fix for MC-9568)
smart bucking buckets
this mod auto stacks empty buckets to save space
Advanced Flight Rockets
Adds recipes of firework rockets with longer flight time.
Invaded Space
(Practically adds nothing as of now) A space Minecraft mod we are making that will capture the creativity of a robot civilization
Bunker plugin
A social deduction RPG minigame where players must justify their value to survive the apocalypse in a limited-space shelter.
Opa Pa Displacement Of Realities
A mod that reworks the game's progression and adds several new features. explore world, build factories, explore space, but for now, that's in progress. For more information, see the description.
starwars-galaxy
StarWarsGalaxy is a Minecraft Spigot/Paper plugin currently in development that aims to deliver a Star Wars RPG experience with factions, Force abilities, lightsabers, planets, missions, and economy systems

QuantumV
mod that adds everything for fun. adds: rockets, tech, progression, explosives, OP stuff. mainly intended for server host (if playing local)
NLTech: Space Technologies
NLTST is an industrial Minecraft mod that brings various space technologies along with planets and star systems to the game. Currently in early alpha stages and looking for suggestions!
Darwin IV X Ad Astra Compatibility
Makes Darwin IV Dimension an Ad Astra planet