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Therefore, the sun, moon, planets and stars appear to wheel westward across our sky each day, but it's really the Earth that's doing the spinning.
• Now consider the Earth and Saturn in their orbits around the sun. Day by day, the Earth - the third planet from the sun - is gaining ground on Saturn, the sixth planet out. Earth's orbit is smaller, and we move faster than Saturn in orbit, so we come between Saturn and the sun nearly every year. On April 28, 2013, the Earth will pass between the sun and Saturn, coming closest to the ringed planet for this year. At that time, Saturn will be opposite the sun in our sky. Thus, Saturn will shine all night long, rising around sunset and setting around sunrise.
• Between now and then, Saturn and Spica will come into view earlier each evening, so watch for them!