St. Louis (KSDK) -- The James S. McDonnell Planetarium at the Saint Louis Science Center is celebrating its 50th anniversary by bringing back some old favorites.

You can see the stars at the famed planetarium for just $.50 a show this week.

Saturday is Astronomy Day. The St. Louis Astronomical Society will be on hand with tips on telescopes and suggestions on how you can explore the planets on your own.

For more information, visit the Saint Louis Science Center website at