Astronomer Dave Fong will lead a journey to the outer reaches of the solar system to explore the realm of the icy dwarf planets at the planetarium show “Pluto and the Icy White Dwarfs.”

The show will be presented at Ritchie Observatory at 7 p.m. Saturday, Jan. 11.

If the sky is clear, astronomers from the Battle Point Astronomical Association will be on hand with telescopes for public star-gazing.

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

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

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