Astronomer Dave Fong will lead the planetarium show “Mining the Riches of Space” at 8 p.m. Saturday, July 14 at the Edwin E. Ritchie Observatory at Battle Point Park.

Fong will talk about prospecting for and procuring valuable space resources.

BPAstro Kids will have “Chrismas in July” making fake snow, creating catapults to toss snow balls and more 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 to the show is free to members of the Battle Point Astronomical Association; $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 www.bpastro.org.