The short animation shows the planets Mercury, Mars, and Jupiter and their movement in the morning sky over five mornings. On December 10, the planets made a striking scene when they were less than a one degree apart.
Three mornings after closet approach. Mercury continues it move towards the horizon. Jupiter is widening the gap between itself and Mars. The planets in order from top to bottom are Jupiter, Mars, and Mercury.
Two mornings after closet approach. Mercury is now rapidly leaving the morning sky leaving Jupiter and Mars behind. The planets in order from top to bottom are Jupiter, Mars, and Mercury.
The morning of closest approach. The planets in order from top to bottom are Mercury, Mars, and Jupiter.
One day before closest approach. The planets in order from top to bottom are Mercury, Mars, and Jupiter.
Two days before closest approach. The planets in order from top to bottom are Mercury, Mars, and Jupiter.
This page was referenced in the Astronomy Picture Of the Day (APOD) for December 9, 2006 as the link "before sunrise".