I got interested in space quite recently, and after flying rockets (into the ground) for a few hours in KSP, I decided to try and build a solar system in Scratch ("How hard can it be?!"). 8 Wikipedia pages later... I had orbits! Then I added planets, menus... you get the picture.
You can click the images of planets on the left to open a menu so you can change their properties.
Eccentricity = how circular the orbit is
Semi-major axis = how big/wide the orbit is
Orbit angle = which direction the closest and furthest points from the sun are
Credz:
Pen text engine by theChAOTiC:
https://scratch.mit.edu/projects/90278685/
First song: Frost Waltz by Kevin MacLeod:
https://www.youtube.com/watch?v=X12RW3NkiYg
Second song: Interstellar by Vexento:
https://www.youtube.com/watch?v=qWH_QavPgo4
Feel free to remix and show other people your solar systems! <3