3 ms·
Original source, with some explanation: http://www.strudel.org.uk/blog/astro/000943.shtml http://www.strudel.org.uk/blog/astro/000943.shtml
by turnersauce 16y ago
Original source, with some explanation:
http://www.strudel.org.uk/blog/astro/000943.shtml http://www.strudel.org.uk/blog/astro/000943.shtml