CALENDAR
After Dark: Full Spectrum Science The Exploratorium’s weekly adults-only after-hours event features the Tactile Dome and explainer demonstrations. 6-10 p.m. Thurs. $10-$15. The Exploratorium, Pier 15, S.F. www.exploratorium.edu.
Alameda County Fair Carnival rides, live music, agricultural and livestock contests and exhibits, vendors, exhibits, food, drink, and more. Through July 9. $8-$15. Alameda County
Fairgrounds, 4501 Pleasanton Ave., Pleasanton. an nual.alamedacountyfair.com.
Cougar Ball The worlds largest gathering of “cougars and cubs” honors France’s new first lady, Brigitte Trogneux, and invites younger men and older women to dance the night away, play mixer games and more. 8 p.m. Sat. $20. Monroe Lounge, 473 Broadway, S.F. www.cougarevents.com.
Fillmore Jazz Festival The Fillmore District’s annual festival is themed “Summer of Love” with live music on multiple stages, 12 blocks of fine arts and crafts, gourmet food and drink and more. 10 a.m.-6 p.m. Sat. and Sun. Free. Fillmore Jazz Festival, Fillmore St. between Jackson and Eddy, S.F. (800) 310-6563. www.sresproductions.com/events/ fillmore-jazz-festival.
Marin County Fair Themed “Let the Fun Shine In,” the annual event features live music, agricultural exhibits, carnival rides, vendors, competitive art exhibits, live shows, food, drink and more. 11
a.m.-11 p.m. Fri.-July 4. $12$20. Marin County Fairgrounds, 10 Avenue of the Flags, San Rafael. (415) 4736400. www.marinfair.org.
Nightlife Spotlight The Academy’s weekly adults-only after-hours event celebrates the best of the Academy with interactive programs throughout the museum and a talk by Wired science editor Matt Simon. 6-10 p.m. Thurs. $10$12. California Academy of Sciences, 55 Music Concourse Dr., S.F. www.calacademy.org/ nightlife.
Opera at the Ballpark The S.F. Opera and S.F. Giants present a live simulcast of Mozart’s "Don Giovanni" featuring Ildebrando D’Arcangelo, Erin Wall, Ana María Martínez, Sarah Shafer, Stanislas de Barbeyrac, Erik Anstine, Michael Sumuel and Andrea Silvestrelli. 7:30 p.m. Fri. Free. AT&T Park, 24 Willie Mays Plaza, S.F. sfopera.com/simulcast. Outdoor Belly Dancing Class A free belly dancing lesson with Abigail Keyes of the Salimpour School of Belly Dance. 4 p.m. Sat. Free. Bay Street Emeryville, 5616 Bay St., Emeryville. www.baystreetemeryville.com.
Tahiti Fête of San Jose Dancers come from all over the world to compete demonstrating traditional and contemporary choreography while showcasing the rich history and tales of the Polynesian people. Vendors and exhibitors offer Polynesian food, arts and crafts, and dance workshops. 8:30 a.m.-5:45 p.m. Sat. through July 3. $25, Prices may vary. San Jose State Event Center, 290 S. Seventh St., San Jose. www.tahitifete.com.