Modpack provides great experience in exploration with core mod being Ad astra and Create.
This modpack contains many futuristic, world enhancing, quality of life changers mods.

Although these planets are limited, they are interesting to explore anyways.

It has rewarding quests and cohesive progression, dont forget to install mods below in order for it to work. Just download the modpack and drag and drop downloaded files into the app.

Core mods used are Ad astra and Create which are combined with more mods that bend a rules a bit to make progression make sense. It uses mods and tweaks for effects to make the world more lively.

• CobbleGenRandomizer

• Mining Gadgets

• FTB Library (Forge)

• FTB Teams (Forge)

• FTB Quests (Forge)

• Complementary Reimagined r5.6.1
  High-quality shaderpack that enhances lighting, shadows, water, and overall visual effects.

• Falling Leaves 1.20.1-2.1.2
  Adds falling leaf particles to trees for improved atmosphere and immersion.

• JEI 1.20.1 Forge 15.20.0.128
  In-game recipe viewer and item lookup tool.

• EMI 1.1.22 Forge
  Alternative recipe and item browsing interface.

• Even More Instruments 6.1.4
  Adds additional playable instruments.

• Steam Rails 1.6.14 Beta
  Expands Create’s railway system with steam locomotives and rail content.

• MCEF Forge 2.1.6
  Allows in-game web content rendering.

• Polytone 3.5.17
  Enhances and customizes in-game audio systems.

• Better Leaves 9.4
  Improves leaf block visuals for fuller trees.

• TFMG 1.0.2e
  Technology-focused mod adding machinery and automation.

• Sound Physics 1.3.0
  Realistic sound reverb and occlusion simulation.

• Create New Age 1.1.7b
  Expansion addon for Create with new technology features.

• Create Addon Compatibility 0.2.4
  Improves compatibility between Create addons.

• Create Hypertube 0.3.0
  Adds high-speed tube transport systems.

• Traveler’s Backpack 9.1.46
  Wearable backpacks with storage and utilities.

• Perspatium 1.2.0
  Decorative and building enhancement mod.

• Oculus 1.8.0
  Enables shader support on Forge.

• ShulkerBoxTooltip 4.0.4
  Displays shulker box contents inside tooltips.

• Canon Nukes 3.0.0
  Adds powerful explosive weapons and nuclear devices.

• Ambient Sounds 6.3.1
  Immersive biome-based ambient audio system.

• Skin Layers 3D 1.10.1
  Renders player skin layers in full 3D.

• EMIffect 1.1.2
  Displays active potion effects in EMI interface.

• Distant Horizons 2.4.5
  Extends render distance using LOD terrain generation.

• Crops 3D
  Improves crop visuals with 3D models.

• Farmer’s Delight 1.2.9
  Expands farming and cooking mechanics.

• Continuity 3.0.0
  Adds connected textures support.

• Particle Effects 1.2.0
  Adds additional visual particle effects.

• Fancy Toasts 1.4.5.1
  Customizes advancement and notification toasts.

• Ad Astra 1.15.20
  Space exploration mod with planets, rockets, and technology.

• Fresh Animations 1.10.3
  Resource pack that improves mob animations.

• Crushed Astra 1.0.6
  Addon expansion for Ad Astra.

• Create 6.0.8
  Mechanical automation and kinetic engineering mod.

• Create Ad Astra Recipes 1.0.0
  Adds Create-compatible recipe integrations for Ad Astra content.

• Lightman’s Currency 2.3.0.3
  Adds a complete currency, trading, and shop system.

• Embeddium 0.3.31
  Performance optimization mod improving rendering and FPS.

• Xaero’s Minimap 23.8.2
  Adds a fully featured minimap with waypoints and world mapping.

• WebDisplays 2.0.2
  Allows displaying web content on in-game screens.

• Create Nuclear 1.3.1
  Nuclear-themed Create addon with reactors and advanced power systems.

• Almost Unified 0.10.1
  Unifies duplicate ores and items across different mods.

• Create Big Cannons 5.10.0
  Large-scale artillery and weaponry addon for Create.

• Subtle Effects 1.13.2
  Adds subtle visual and environmental effects for immersion.

• Genshin Instruments 5.0
  Adds playable instruments inspired by Genshin Impact.

• Simple Grass Flowers v1.9.6
  Resource pack improving grass and flower visuals.

• Insects Recrafted 1.1.0
  Adds new insect mobs and related content.

• Starter Kit 7.4
  Gives configurable starter items when players join.

• Valkyrien Skies 2.3.0 Beta 12
  Physics-based ships and moving structures.

• Create Radar 0.3.1
  Adds radar and detection systems for Create contraptions.

• EMI Trades 1.2.1
  Displays villager trades inside EMI interface.

• Alex’s Caves 2.0.2
  Massive cave expansion with new biomes, mobs, and bosses.

• Escalated 1.2.0
  Combat and progression expansion addon for Create.

• AppleSkin 2.5.1
  Shows detailed hunger and saturation information.

• Presence Footsteps (Modded)
  Resource pack enhancing footstep sounds for modded blocks.

• Jade 11.13.2
  Displays detailed block and entity information in-game.

• EMI Enchanting 0.1.2
  Adds enchantment recipe viewing support to EMI.

• Round Trees 8.0
  Resource pack that makes trees appear rounder and smoother.

• Another Furniture 3.0.4
  Adds decorative furniture blocks.

• Construction Wand 2.11
  Makes building large structures faster and easier.

• Jade Addons 5.5.0
  Adds extra integrations and information displays for Jade.

• TAMG 1.1.0
  Adds additional gameplay mechanics and quality-of-life improvements.

• Serene Seasons 9.1.0.2
  Introduces a dynamic seasonal system that affects crops, weather, and biomes.

• Entity Texture Features 7.0.6
  Adds support for advanced entity texture customization.

• AstraLex V93.0 Shader
  High-quality cinematic shader pack with enhanced lighting and visuals.

• VillagersPlus 3.1
  Expands villager professions, trades, and village content.

• Visuality 2.0.2
  Adds ambient and decorative particle effects.

• Entity Model Features 3.0.7
  Enables advanced custom entity models.

• Create Structures 0.1.1
  Adds pre-built Create-themed structures to world generation.

• Create Central Kitchen 1.4.3b
  Expands Create with automated food processing systems.

• Better Skies 1.0.2
  Improves sky visuals and atmospheric effects.

• Effectual 1.3.0
  Adds immersive visual and status-based effects.

• Enchant Icons 1.20 v1.3
  Resource pack that adds icons to enchantments.

• Xaero’s World Map 1.36.0
  Full-screen world map companion to Xaero’s Minimap.

• EMI Create Schematics 1.0.4
  Adds Create schematic integration to EMI.

• Drip Sounds 0.5.2
  Adds realistic cave drip sound effects.

• Classic 3D v2.0.0
  Resource pack that adds 3D block models.

• Wormhole 1.1.16
  Adds teleportation portals and warp mechanics.

• Goop Reforged 1.1.1
  Adds slime-themed tools and mechanics.

• Fast Better Grass
  Resource pack improving grass rendering.

• EMI Loot 0.7.8
  Displays loot tables within EMI.

• Gentler Weather Sounds 2.1.0
  Softer and more immersive weather audio.

• 3D Armor 0.9.2
  Adds 3D modeled armor visuals.

• Melody Forge 1.0.3
  Adds enhanced music and audio systems.

• Particle Rain 4.0.0
  Improves rain particle effects.

• Biomes O’ Plenty 19.0.0.96
  Massive biome expansion mod.

• Ad Astra More Structures 1.0.0
  Adds additional space structures to Ad Astra dimensions.

• Photon Shader v1.2a
  Lightweight performance-friendly shader pack.

• Naturalist 5.0pre3
  Adds realistic wildlife and animals.

• Moving Elevators 1.4.11
  Adds functional elevator blocks.

• Oil Well Yeeter 0.4
  Removes or alters oil well generation.

• FancyMenu 3.8.1
  Fully customizable main menu system.

• Entity Culling 1.9.4
  Improves performance by culling hidden entities.

• Create Enchantment Industry 1.3.3
  Adds automated enchanting systems to Create.

• Clear Void 1.3.0
  Customizable void world generation.

• Simple Grass Flowers PBR
  PBR version of improved grass and flower textures.

• Portal Gels 1.3
  Adds Portal-inspired gels with special movement effects.

• Particular 1.2.7
  Adds detailed particle effects.

• Explosive Enhancement 1.1.0
  Enhances explosion visuals and effects.

• Just Enough Resources 1.4.0.247
  Shows ore and mob spawn distributions.

• Camera Overhaul 2.0.6
  Improves camera movement and animations.

• Mutant Monsters 8.0.8
  Adds powerful mutant boss mobs.

• Planets+ 1.7.5
  Expands planetary content and space features.

• Biome Spawn Point 2.4
  Allows configuring spawn biomes.