bmaju's InnerMinmus CKAN

bmaju's InnerMinmus (bIM) reimagines Kerbin’s moon system: Minmus becomes a larger inner moon, the Mun moves farther outward, and pale rings stretch across Kerbin’s sky.

Rather than adding new celestial bodies, bIM rearranges the familiar stock system, blending scientific plausibility with KSP’s playful absurdity. Minmus’ composition remains open to investigation—and the blue-cheese hypothesis still has enthusiastic supporters.

Features

• Moves Minmus to a semi-major axis of 12,000 km, enlarges it to a 120 km radius, and increases its surface gravity to approximately 0.12 g
• Keeps Minmus tidally locked to Kerbin
• Moves the Mun outward to a semi-major axis of approximately 46,975 km
• Rebalances science rewards for the moons’ new roles, including separate Mun values when KH’s Better Mun is installed
• Adds an optional pale ring system around Kerbin
• Includes RingShadow, allowing Kerbin, Mun and Minmus to cast shadows onto the rings
• Includes optional RingGlow, using MunGlow integration to illuminate compatible clouds and supported surface/craft shaders with reflected ring light
• Includes scaled-space lunar eclipse compatibility handling
• Adds biome-specific Minmus EVA and surface-sample reports, exploring possible olivine, glassy fragments and surface weathering without entirely abandoning dessert speculation
• Retains the existing terrain and textures of Minmus and the Mun, allowing compatible visual overhauls to provide their appearance

Kerbin Rings and Shadows

Kerbin’s rings extend approximately 1,628–1,973 km from its centre. Ring shadows work in flight, map view and the tracking station, and account for the configured Sun radius—including changes made by BetterKerbol.

Rings are enabled by default. To disable them, open:

GameData/bmaju's InnerMinmus/Settings.cfg

and change KerbinRings = True to KerbinRings = False.

When enabled, bIM replaces existing Kopernicus ring definitions on Kerbin to prevent duplicate ring systems.

RingGlow

RingGlow is included in bIM and activates only when a compatible, enabled MunGlow installation is present. No separate RingGlow download is required.

Cloud lighting additionally requires compatible volumetric EVE and Scatterer installations and respects MunGlow’s cloud and per-layer settings. Follow those mods’ own dependency instructions.

RingGlow currently combines reflected light from multiple ring regions into one representative cloud-lighting direction. It does not yet produce a spatially resolved glowing arc. Surface and craft illumination depend on their shaders; dedicated atmosphere and ocean lighting are not included.

Settings are available in RingGlowSettings.cfg and RingShadowsSettings.cfg inside the mod folder. RingGlow integration was checked with MunGlow 4.7.0.66 and may disable itself with incompatible versions.

Requirements

• Kerbal Space Program 1.12.x
• ModuleManager
• Kopernicus, including its required dependencies

Dependencies are not bundled.

EVE, Scatterer and MunGlow are optional. The core system changes and ring shadows do not require them. Scaled-space lunar eclipse rendering requires EVE’s compatible PlanetLight shader; RingGlow requires MunGlow.

Recommended Mods and Compatibility

• Parallax Continued: recommended for terrain and scatter visuals. Install its stock-system assets and dependencies. Compatibility with every version or third-party configuration is not guaranteed.
• KH’s Better Mun: recommended for its Mun visual overhaul. bIM retains its terrain and textures while setting Mun’s orbit and applying adjusted science rewards.
• BetterKerbol: compatible with bIM’s eclipse calculations, which use the actual configured star radius.
• OPXtras: complements an expanded stock-system setup. bIM takes priority for its specified moon orbits and Minmus physical properties; keep overlapping moon options at their stock settings. When using BetterKerbol alongside OPXtras, set OPXtras’ ImprovedKerbol to Stock.

Other mods that alter Minmus’ orbit or physical properties, Mun’s orbit, or Kerbin’s rings may conflict. Compatibility with every planet pack or optional configuration has not been verified.

Installation and Updates

Close KSP and copy the included folder into your installation:

Kerbal Space Program/GameData/bmaju's InnerMinmus

The complete package uses one mod folder and includes both ring features.

When updating, back up saves and custom settings, remove the previous InnerMinmus folder, then install the new one. Reapply custom settings to the new configuration files.

Back up existing saves before installing or updating. Changes to moon orbits, size, gravity and sphere of influence can affect vessels already operating nearby.

Localization

Minmus’ description and all 23 new science report texts are localized in:

English, German, Spanish, French, Italian, Japanese, Brazilian Portuguese, Russian, Simplified Chinese and Korean.

Korean requires a suitable Korean localization setup; it is not a standard selectable language in stock KSP 1.

Known Limitations

• RingGlow cloud lighting uses a single representative direction.
• Optional visual integrations depend on compatible versions of their respective mods.
• An eclipse-related RGB edge artifact has been observed in the tested visual setup. Its cause remains unresolved.

License and Source

MIT License. Third-party acknowledgements and the retained MunGlow license notice are included in LICENSE.txt.

Source code and a build script are included with the release. External dependencies are not redistributed.

Project GitHub repository