Once every 20 years, we the people of Earth are given a special treat, Saturn and Jupiter in conjunction. A conjunction is when two objects in the sky are very close together. On Dec. 21, these planets will be 0.1 degree apart. They will be bright and low in the southwest about 30 minutes after sunset.
They have been in our evening skies for quite some time now, slowly getting closer and closer together. Jupiter is the bright object in the southwest and Saturn is about 5 degrees above and to its left (or the width of three fingers held out at arm’s length).