Spyglass Astronomy Mod (1.21.11, 1.20.1) – Explore The Solar System
Spyglass Astronomy Mod (1.21.11, 1.20.1) brings a beautiful 3D stargazing experience, as if you were using a spyglass to explore the universe in-game. The mod runs entirely on the client side and does not affect the server.

Features:
- Planets and stars are procedurally generated based on your world, with high scientific accuracy and identical results for all players in the same world.
- You can draw your own constellations, name celestial bodies, and build lore in your own imaginative way.
- Observation Modes:
- You can switch between observation modes by holding zoom (like the vanilla spyglass) and pressing the middle mouse button:
- Vanilla mode – the default Minecraft spyglass view.
- Constellation mode (represented by amethyst) – allows you to draw and select constellations.
- Star mode (represented by emerald) – allows you to select stars or planets (in commands, comets are also treated as planets).
How to use:
Spyglass Modes
- There are three spyglass modes:
- Vanilla – Default spyglass view
- Constellation Mode (Amethyst)
- Star Mode (Emerald)
- While zoomed in, use the pick block key (
Middle Click) to switch between modes.
Constellation Mode
- Hold the attack button (
Left Click) to draw lines between stars. - You can create new constellations or select existing ones.
Star Mode
- Select individual stars and planets.
- Comets are treated as planets when using commands.
Commands and Interaction
- After selecting an object:
- Name it using
/sga:name <name> - View information with
/sga:info
- Name it using
- You can also get info without selecting an object by typing
/sga:infoand following the suggestions. - All available client-side commands can be discovered by typing
/sga:and checking the suggestions.
Multiplayer Sharing
- Share discoveries with other players using:
/sga:share– share the currently selected object/sga:share <object>– share a specific object
- The command gives you a share code that others can use, as long as they also have the mod installed.
- For better synchronization, you can use Spyglass Astronomy Sync, which must be installed on the server.
Additional Notes
- Older versions of this mod are not compatible with Spyglass Improvements.
- This mod includes its own scrollable spyglass zoom.
- Other mods, such as Zoomglass, can be used to add spyglass hotkeys.
- A separate client+server addon exists for bulk sharing, created by another developer.
Screenshots:










Crafting Recipes:
Recommend that you should install Just Enough Items (for mods using Forge) or Roughly Enough Items (for mods using Fabric) to view the full recipes included in this mod.
Requires:
How to install:
Click the following link to view details: How to Install Mods for Minecraft Java Edition on PC: A Beginner Guide
Spyglass Astronomy Mod (1.21.11, 1.20.1) Download Links
For Minecraft 1.19
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.19.2, 1.19.1
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.19.3
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.19.4
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.1, 1.20
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.2
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.4
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.20.6
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.21.1, 1.21
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.21.3
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.21.4
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.21.5
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.21.8, 1.21.7, 1.21.6
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.21.10, 1.21.9
Fabric version: Download from Server 1 – Download from Server 2
For Minecraft 1.21.11
Fabric version: Download from Server 1 – Download from Server 2
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December 23, 2025