Join Robert Wilson, a senior executive in the aerospace and defense industries, as he delivers a presentation on stars, planets and galaxies at 7 tonight at the Tarpon Springs Public Library, 138 E Lemon St. Free. All ages welcome. Refreshments provided. Call (727) 943-4922.
Summertime marketplace begins: From 9 a.m.-1 p.m. the last Wednesday of every month through October at Clearwater City Hall, 112 S Osceola Ave. Features fresh produce, cheese, bread, arts and crafts, and Fair Trade items. Live music. Free parking. Call (727) 461-7674.
Safe boating course: The Dunedin Coast Guard Auxiliary Flotilla will begin its next safe boating and seamanship program Monday and meet from 7:30-9:30 p.m. Mondays and Wednesdays until June 23 at the Dunedin Harbormaster's Building, 51 Main St., Dunedin. Registration will take place from 7-8:30 p.m. in the classroom tonight (Wednesday). The $50 charge covers materials and equipment. Call (727) 736-1911 or (727) 599-8837.
Trace your roots: Free genealogy assistance with volunteer genealogist Mary Kay Heitmann from 10 a.m.-4 p.m. Wednesdays at the Tarpon Springs Public Library, 138 E Lemon St. Call (727) 943-4922.
Peace vigil: 4:30-6 p.m. Wednesdays at Edgewater Park, next to the Dunedin Marina, at Alt. U.S. 19 and Main Street, Dunedin. Call (727) 734-8945 or visit www.stpeteforpeace.org.
Art on display: View new paintings, bronzes and giclees by award-winning wildlife, western and Florida artists Thursday through June 21 at the Plainsmen Gallery, 2430 Sunset Point Road, Clearwater. Call (727) 726-5100.
Town hall meeting: The public is invited to a town hall meeting with state Rep. Peter Nehr, R-Tarpon Springs, from 7-9 p.m. Thursday at the Tarpon Springs Cultural Center, 101 S Pinellas Ave. Call (727) 943-4880.
Butterfly count: The Palm Harbor Garden Club seeks volunteers to count butterflies Friday. Help is needed within a 15-mile radius from East Bay Drive north to the Pasco County Line. For details, call (727) 938-2947.
Play day: Safety Harbor's North City Park, 2075 Swan Lane, will hold a play day from 3-6 p.m. Friday with inflatables, games and refreshments. Call (727) 724-1545.
Friday night fun: 5 to 8 p.m. every Friday at American Legion Post 119, 130 First Ave. SW, Largo. Seafood or chicken dinners will be available. The cost is $6.50. Bill Johnson and his karaoke machine will entertain from 7-11 p.m. Call (727) 584-2038.
55 Alive: Mature driving classes for drivers over 50 are taught by trained volunteers in two four-hour sessions. Graduates may be eligible for auto insurance discounts for the following three years. The cost is $10. For days and times, call (888) 227-7669.
Supporting veterans: Attend weekly dinner, dancing and bingo events at American Legion Turner-Brandon Post 7, 1760 Turner St., Clearwater. Memberships are available for all veterans and immediate family members. For event days and times, call (727) 447-9204.
Meet the Rays: Tampa Bay Rays Eric Hinske and Edwin Jackson will be at the Ross Norton Recreation Complex, 1426 S Martin Luther King Jr. Ave., Clearwater, from 10 a.m.-noon Saturday to sign autographs, hand out prizes and offer raffle opportunities. The event will promote the new playground to be built by volunteers at the complex on June 14. Call (727) 462-6025.
Synchronized swimming: The Suncoast Water Works, Pinellas County's only synchronized girls swim team for ages 8-18, will host its annual show and silent auction fundraiser at 5 p.m. Saturday at the Southwest Pool, 13120 Vonn Road, Largo. Tickets are $5 at gate. Call (727) 743-3108.