18 MAY 2012 by ideonexus
Jupiter's Pattern in the Night Sky
Every 12 years Jupiter returns to the same position in the sky; every 370 days it disappears in the fire of the Sun in the evening to the west, 30 days later it reappears in the morning to the east...Folksonomies: astronomy
Folksonomies: astronomy
4th Century BC observation from Gan De.