PEORIA (WEEK) -- After the sun sets, you may want to keep your eyes on the South Western Sky from now until the end of December.
Saturn and Jupiter can be seen around the moon by the naked eye right now.
Every 20 years Jupiter passes up Saturn during orbit.
You can watch the two planets get closer and closer each night.
However, this passing is a bit different than those in years past.
"Jupiter and Saturn will be so close together in our sky that you might have trouble telling them apart. They might look like one object in the nighttime sky. That hasn't happened and they haven't been that close in hundreds of years. Not since 1623," said Peoria Riverfront Museum's Dome Planetarium Curator Renae Kerrigan.
This great conjunction takes place on December 21, 2020.