3 ms·
A classic for anyone not familiar: https://sites.uni.edu/morgans/astro/course/nightfall.pdf https://sites.uni.edu/morgans/astro/course/nightfall.pdf
by le-mark 4y ago
A classic for anyone not familiar:
https://sites.uni.edu/morgans/astro/course/nightfall.pdf https://sites.uni.edu/morgans/astro/course/nightfall.pdf