The planetarium show “All Things Saturn” comes to the Edwin E. Ritchie Observatory at 8 p.m. Saturday, May 9.

Saturn, the ringed wonder of the solar system, is now rising in the late evening eastern sky. Steve Ruhl, president of the Battle Point Astronomical Association, will look at the spectacular planet’s structure, its more than 60 moons, the rings, and their dynamic interactions.

If the sky is clear, the group will also check out the real thing through the telescopes of BPAA astronomers.

The show is free to BPAA members; $2 donation suggested for nonmembers, $5 for families.

For more information, call 206-842-9152 or visit www.bpastro.org.