Astronomer Dave Fong will speak at the planetarium show “Strange Science Stuff” at 7:30 p.m. Saturday, April 14 at the Edwin E. Ritchie Observatory at Battle Point Park.

Fong will talk about a mysterious object from beyond our solar system and other strange phenomena.

BPAstro Kids will learn about various astronomical objects and create take-home collages at “Make Some Space” with Dr. Erica Saint Clair at 4 and 5 p.m.

If the sky is clear, astronomers will be on hand with telescopes for public star gazing afterward.

Admission is free to members of the Battle Point Astronomical Association; a $2 donation suggested for nonmembers, $5 for families.

The BPAA is a nonprofit amateur astronomy organization that operates the Ritchie Observatory and John H. Rudolph Planetarium in the Helix House at Battle Point Park.

For more information, visit http://www.bpastro.org/.