Gentle Walks at 9 a.m. at the Nature Center. A gentle walk for which the emphasis is on discovery, not mileage gained. Free.
Fourth Friday Fractals from 7-7:45 p.m. at the Nature Center. See fractals in nature as a full-dome planetarium show! Cost is $10 for adults and $8 for children. More information at peecnature.org.
Young at Heart Hike at 10 a.m. at the Nature Center. Join PEEC on a hike that brings together people of all ages to connect, learn, play, and explore. Free.
June 25-26 — Los Alamos Amateur Radio Club Field Day exercise at the North Mesa Picnic Ground, off North Mesa Road. Ham radio operators across North America will operate from noon Saturday to noon Sunday using generator, solar and battery power to make radio contacts. Public is invited to attend. For more information, call Charles Rogers, KJ5KU, 412-3149
Feature Film: “Black Holes” at 2 p.m. at the Nature Center. Voyage through the galaxies in search of the answers to explain the riddles of black holes! Enjoy a talk by a local astrophysicist. Cost is $6 for adults and $4 for children.