Doesn't do much (yet). Just press space to generate random mountain/horizon silhouette and stars and listen to the music. I just wanted to get this out there (the mountains (I know they're not always mountains, they're sometimes flat, but I just say mountains) and stars turned out better than I expected for the little time I put in to the pen scripts), and (hopefully) I'll improve it in due time. I made this after watching the Perseids meteor shower, and wanted to try to capture the wonder of the stars.
Music - Frozen Star by Kevin MacLeod Coding by me. Fun fact: There are exactly 1000 stars in each scene! (Most are very dim.)