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Depending on your goals, “EasySky” usually refers to one of two major software systems: EasySky V2 (a prominent environment and weather plug-in for Unreal Engine game developers) or ESASky (the European Space Agency’s beginner-friendly data portal for exploring the cosmic sky).

Here are the step-by-step beginner guides to master both platforms. Part 1: Mastering EasySky V2 (For Unreal Engine Developers)

If you are developing a game or simulation and want to build dynamic day/night cycles and procedural weather, EasySky V2 provides an optimized out-of-the-box system. 1. Clean Your Scene

Before adding the asset, you must prevent lighting system conflicts. Delete or reference existing Directional Lights. Delete or reference existing Sky Lights.

Clear out any Exponential Height Fog or Post-Process Volumes from your default hierarchy. 2. Install and Activate the Plug-in Open the Unreal Engine Editor. Go to Edit > Plugins. Search for EasySky V2 and check Enabled. Restart the editor.

Go to your Content Browser View Options (bottom right) and check Show Plugin Content and Show Engine Content. 3. Drag and Drop the Core Blueprint Locate BP_EasySkyV2 within the plug-in folder.

Drag the blueprint directly into your game level. The sky, sun, and base atmosphere will render automatically. 4. Configure Weather Presets

EasySky V2 uses automated blending routines to transition your level between different meteorological environments. Select BP_EasySkyV2 in your Outliner. Look at the details panel to adjust the weather timer.

Experiment with built-in presets: Clear Sky, Medium Clouded, Clouded, Heavy Rain, Thunder Storm, and Foggy.

Beginner Tip: Set the local temperature below 0 degrees Celsius, and the engine will automatically transition rain assets into dynamic snow. Part 2: Mastering ESASky (For Astronomy Beginners)

If your goal is to look at the universe, the European Space Agency’s ESASky Portal is a web-based, mission-agnostic application designed to view cosmic objects across the electromagnetic spectrum. 1. Launch the Explorer

Launch a standard desktop web browser (Chrome, Firefox, or Safari) and open the ESASky web application.

Select the “Explorer” mode option if prompted; this simplifies the interface for standard tracking and learning. 2. Search and Pan the Celestial Sphere

Type the name of a planet, star, or deep-space object (e.g., “M31” or “Andromeda”) into the target Search Bar at the top.

Use your mouse scroll wheel to zoom or click-and-drag to pan smoothly through the global HEALPix all-sky map. 3. Shift the Electromagnetic Spectrum

The core power of ESASky is viewing the exact same coordinate across different wavebands. Locate the Wavelength Selector ribbon at the top.

Click between Gamma-ray, X-ray, Ultraviolet, Optical, Infrared, and Radio wavelengths.

Watch how cold dust clouds disappear in optical mode but glow brightly under infrared tracking. 4. Overlay Real Mission Footprints Open the Imaging Observations or Catalogues panels.

Select data checkboxes from historic space fleets like the Hubble Space Telescope, Gaia, or XMM-Newton.

Click the highlighted geometries (footprints) on your screen to immediately review or download science-ready imaging files and data tables.

To help point you in the right direction, let me know: Are you looking to develop weather environments in Unreal Engine, or are you trying to explore real star maps and satellite data? EasySky V2 | Fab