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Astrocraft

Astrocraft

A Customizable and Realistic Astronomy mod. Adds real life stars, planets, meteors and, an orbiting moon with eclipses.

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Decoration
Game Mechanics
Utility

Compatibility

Minecraft: Java Edition

1.21.x
1.20.1–1.20.6

Platforms

Fabric
Quilt

Supported environments

Client-side

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Creators

pymsrps
pymsrps Member

Details

Licensed MIT
Published last year
Updated last month
DescriptionGalleryChangelogVersions

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Astrocraft 1.5.1+1.20.1

by pymsrps on May 10, 2025
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Astrocraft 1.5.1+1.21.4

by pymsrps on May 9, 2025
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Astrocraft 1.5.1+1.20.1 (broken)

by pymsrps on May 9, 2025
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Astrocraft 1.5.1+1.21

by pymsrps on May 9, 2025
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Lunar Eclipse Shadows

The shadow of a lunar eclipse gradually engulfs the moon. Previously, the moon would only darken and change color to red. Shadow moving across the moon

Season Mod Compatibility

If either Serene Seasons or Fabric Seasons are installed, Astrocraft will sync to their configs, so seasons can line up.

Sunspots

Sunspots on the sun's surface are smaller and spawn in groups.

Overlays

  • Zodiacal Constellations are a different color to others.
  • Added the galactic equator, and azimuthal / ecliptic grids.

Other Stuff

  • Lower mouse sensitivity when zooming in with a spyglass.
  • Axial Tilt / Obliquity angle option.
  • You can disable moonlight.
  • Objects like nebulae or galaxies can be added using resource packs. Also added many globular clusters.
  • Stars are stored in a more compact way, reducing the mod's file size.

Bugs

  • Removed the stuck comet that always shows in Live Mode.
  • Fixed Lunar Eclipses almost never happening.
  • Fixed lighting not being affected by rain.

Astrocraft 1.5.0-beta+1.21.4

by pymsrps on Mar 17, 2025
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Astrocraft 1.5.0-beta+1.21

by pymsrps on Mar 16, 2025
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A lot of code has been rewritten for this update, and this beta version may still be buggy.

Comets

Comet with a tail

Small icy bodies with highly eccentric orbits. As comets approach the sun, they brighten rapidly and tails start to form. Some comets even exceed Venus in brightness.

Spyglass Zoom

You can now zoom in further, by scrolling with the mouse wheel. This causes issues when Spyglass Improvements is installed, you can disable Astrocraft's zoom in the config.

Star Rendering Rewrite

Star Rendering is 20x faster, and you can set the Magnitude Limit config option up to magnitude 11 (previously only 6).

Planet Configuration

Semi-Major-Axis and Eccentricity options in the planets' orbit config, have been replaced with Perihelion and Aphelion Radii, which should be more intuitive. If you have the semi-major-axis and eccentricity of an orbit, you can convert using the following:

  • q = a * (1 - e)
  • Q = a * (1 + e)

Highly eccentric or inclined orbits are no longer broken.

The Absolute Magnitude option was replaced with Diameter. Magnitude is calculate from the configured Diameter and Color (albedo).

Custom Star Configuration

Custom stars can have binary systems with exoplanets. Which you can "observe" from, using the Observing Location option. You can also set a star's color to a temperature (K) or spectral class.

Live Mode

Live Mode uses real-life time and planetary positions, though it may not be accurate for things like eclipses. Timezones / Globe Mode is working again now.

Sun and Moon Compatibility

The sun and moon is rendered using vanilla textures, which means many resource packs and mods changing those textures work again. This includes: Cubic Sun & Moon, and Enchanced Celestials.

A red 3d moon, demonstrating compatibility with mods.

Astrocraft 1.4.5+1.21.1

by pymsrps on Oct 25, 2024
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Astrocraft 1.4.5+1.20.4

by pymsrps on Oct 25, 2024
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Astrocraft 1.4.5+1.20.1

by pymsrps on Oct 24, 2024
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Astrocraft 1.4.5+1.21

by pymsrps on Oct 24, 2024
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  • Big Planets option now scales planets differently and also adjusts their moons orbits.
  • Planet positions update every 10 seconds rather than every 50.
  • Added Star Color slider replacing the Star Color toggle option.
  • Added Star Opacity slider.
  • Added Daytime Stars toggle option, which makes stars visible during daytime.
  • Added option to change the height "space" begins.

Sun and Moon Changes

  • Replaced "Big Sun / Moon" toggle option with a scale slider.
  • Sun / Moon are now smaller by default.
  • Legacy Moon Mode has an option to keep the moon in a fixed position opposite the sun.
  • Made the new moon slightly less visible.

Spyglass Changes

  • The number of stars rendered when using a spyglass now changes depending on multiple factors, such as:
    • Y position, you can see more stars when higher up
    • Pitch, less stars are rendered when pointing the spyglass near the horizon, and more near zenith.
  • Reduced spyglass lag, especially when not pointed at the sky.
  • Spyglass culling is compatible with different zoom levels, like with the mod Spyglass Improvements.

Meteor Changes

  • Shooting stars are longer.
  • The radiants of meteor showers move over time.
  • Fixed the geminids spawning an excessive amount of meteors.
  • Added a few small meteor showers.

so many stars

Astrocraft 1.4.4+1.20.4

by pymsrps on Sep 17, 2024
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Astrocraft 1.4.4+1.20.1

by pymsrps on Sep 17, 2024
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Astrocraft 1.4.4+1.21.1

by pymsrps on Sep 17, 2024
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Astrocraft 1.4.4+1.21

by pymsrps on Sep 16, 2024
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  • Fixed the bug on new worlds
  • Fog is now always the same color as the sky, before the fog would be light during the day even if the sky was dark due to an eclipse or the sun being far away This also fixed the bug on 1.21 where the fog color would sometimes be dark before the sun has set.

Astrocraft 1.4.3+1.20.5

by pymsrps on Sep 9, 2024
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Astrocraft 1.4.3+1.20.6

by pymsrps on Sep 9, 2024
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Astrocraft 1.4.3+1.21.1

by pymsrps on Sep 8, 2024
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Astrocraft 1.4.3+1.20.4

by pymsrps on Sep 8, 2024
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Astrocraft 1.4.3+1.20.1

by pymsrps on Sep 8, 2024
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Astrocraft 1.4.3+1.21

by pymsrps on Sep 7, 2024
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  • Added an option to make the sun and moon realistic sized
  • Added an option to disable the config menu
  • Planet textures are now selected using a button
  • Hyperbolic Orbits
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