===== Texture Images =====
  * Deepsky images: https://svs.gsfc.nasa.gov/4851/
  * Solar Textures: https://www.solarsystemscope.com/textures/

===== Tutorials on Various 3D Programming =====
<panel type='default'>
==== Calculating the position of an orbiting body in an orbit defined by Orbital Elements ====
See this page for the introduction and the detailed step-by-step calculation [[tech:tutorials:orbit_calculation ]].

There is a Python package called [[https://github.com/danielk333/pyorb/tree/main/pyorb|pyorb]] that can calculate Keplerian (i.e., $xyz$) from reference ($IJK$) or vice versa.

A good introduction on the whole calculation step (and the visualization of the orbital elements) is available from [[https://www.youtube.com/watch?v=Ie5L8Nz1Ns0&list=PLwBtHS11RryTLwpPoSA8KpavkFIEocfB6&index=2|this YouTube video]].

Check this YouTube video for Keplerian orbital elements and Euler Angles: [[https://www.youtube.com/watch?v=bgFaDDt0Rn4]]

To get orbital elements of Solar System objects, check [[https://ssd.jpl.nasa.gov/horizons/app.html#/|NASA JPL Horizon]].
</panel>

==== Blender Tips ====

{{page>tech:tutorials:blender}}


==== Unity Tips ====
<wrap #unity />
{{page>tech:tutorials:unity}}


==== Unreal Engine Tips ====

{{page>tech:tutorials:unreal}}