Astronomy

STAR PARTY -- Saturday, 8:30 -11 p.m. Sean O'Brien, staff astronomer at the Albert Einstein Planetarium, leads a group observation sponsored by the National Air and Space Museum. Sky Meadows State Park, 11012 Edmonds Lane, Delaplane. $4. 202-633-1000 or 540-592-3556.

Benefits

TALLGREN GOLF OUTING -- Friday at 1 p.m. The eighth annual tournament raises money for leukemia research and awareness. An open house after-party at Madigan's Grill (4120 Merchant Plaza, Woodbridge) starts at 7:30 p.m. The weekend fundraiser continues with a baseball tournament Saturday and July 10 (See Sports, Page 5). Forest Green Golf Club, 4500 Poa Annua Lane, Triangle. $85 to play, free to watch. 703-680-6427.

Books and Authors

WRITE YOUR OWN CHILDREN'S PICTURE BOOK -- Wednesday at 6 p.m. Children's book author Peter Mandel gives advice on how to submit and market your book for publication. First Class, 1726 20th St. NW. $39. For reservations, call 202-797-5102.

DARREN COLEMAN AND KARRINE STEFFANS -- Friday at 6:30 p.m. The authors discuss and sign their recent books: Coleman's "Don't Ever Wonder" and Steffans's "Confessions of a Video Vixen." Karibu Books, Bowie Town Center Mall, 15624 Emerald Way, Bowie. Free. 301- 352-4110.

KEVIN SMOKLER AND CHRISTIAN BAUMAN -- Friday at 7 p.m. The authors discuss Smokler's book "Bookmark Now," which addresses issues faced by contemporary writers in a time of changing technologies. Politics & Prose, 5015 Connecticut Ave. NW. Free. 202-364-1919.

Conservation

CLEAN ENERGY OPEN HOUSE AND NATIVE PLANT GARDEN TOUR -- Saturday, 11 a.m.-4 p.m. The Chesapeake Climate Action Network sponsors a tour of a household run almost entirely by renewable energy. Eat solar-baked cookies and test-drive a tofu-powered lawn mower. 7125 Willow Ave., Takoma Park. Free. 301-270-3722.

Design

WINE AND DESIGN -- Thursday, 6-9 p.m. More than 15 Georgetown antique, design and clothing stores host a monthly reception with cocktails, hors d'oeuvres, live jazz and salsa. Cady's Alley, 33rd and M streets. NW. Free. 202-298-9222.

Festivals

SMITHSONIAN FOLKLIFE FESTIVAL -- Today-Monday, 11 a.m.-5:30 p.m. The 39th annual program spotlighting folk culture from around the globe. This year's themes include "Oman: Desert, Oasis and Sea," with music, dancers and craftspeople from the Arabian Peninsula; the American food revolution over the past 30 years; Latino music; and the forest service. Visit www.folklife.si.edu/festival/2005 for a complete schedule. National Mall, between Seventh and 14th streets. Free. 202-633-9884.

Food and Drink

BASTILLE DAY CELEBRATION -- Saturday, 7-11:30 p.m. Tastedc.com sponsors a French culinary event featuring regional specialties, plus outdoor vendors and live music. Part of the event's proceeds benefit a French charitable organization, to be named. Embassy of France, 4101 Reservoir Rd. NW. $70. For reservations, call 202-244-3700.

Gardening

TASTY TOMATOES -- Saturday at 10 a.m. Staff horticulturist Cindy Brown shares her secrets on growing tomatoes and demonstrates how to use them in summer recipes such as salsa and gazpacho. Green Spring Gardens Park, 4603 Green Spring Rd., Alexandria. $11. For reservations, call 703-642-5173.

Health and Fitness

BICYCLE ROADSIDE REPAIR -- Wednesday at 7:30 p.m. The store's bike technicians demonstrate field repairs including fixing flat tires and broken chains. REI, 3509 Carlin Springs Rd., Bailey's Crossroads. Free. 703-379-9400.

CANAL THROUGH RIDE -- Saturday at 8:30 a.m. The park staff sponsors the first of its two four-day, 184.5-mile guided bike rides along the entire C&O canal. Riders camp at sites along the canal each night. A support vehicle transports riders from their cars to the starting point in Cumberland and carries gear on the trip. The second trip of the summer is Aug. 4-7. Meet at Great Falls Park, 11710 McArthur Blvd., Potomac. Free. For reservations, call 202-653-5190.

WEEKEND YOGA WORKSHOP -- Saturday-July 10 at 12:30 p.m. Two yoga classes covering the Ashtanga primary series and the intermediate sequence. The first workshop is open to all levels. For the second, class members must have taken the first workshop or have experience with the Ashtanga primary series. 18th & Yoga, 1115 U St. NW. $30-$50. 202-462-1800.

History

THE CIVIL WAR'S MOST FAMOUS SPY: A WALK WITH ROSE GREENHOW -- Today at 1 p.m. A tour that traces the footsteps of Greenhow, a Confederate spy, led by Ann Blackman, author of "Wild Rose: Rose O'Neale Greenhow, Civil War Spy." A book signing takes place at the end of the walk. Meet at McPherson Square Metro Station, White House Exit, Vermont Avenue and I Street NW. $10, children under 12 $5. 202-484-1565.

FIRST PERSON -- Wednesday at 1 p.m. Holocaust survivor Louise Lawrence Israels, who spent her early life hiding with her family in Amsterdam, discusses her experiences during and after the war. U.S. Holocaust Memorial Museum, 100 Raoul Wallenberg Pl. SW. Free. 202-488-0400.

July Fourth

ANNAPOLIS JULY FOURTH PARADE -- Monday at 6 p.m. An old-fashioned patriotic parade, followed by a concert by the U.S. Naval Academy Band at 8 p.m. and waterfront fireworks at 9:15 p.m. West Street and Amos Garrett Boulevard, Annapolis. Free. 410-263-1183.

Miscellaneous

GADSBY'S ANTIQUE APPRAISAL AFFAIR -- Friday, 11 a.m.- 8 p.m.; Saturday, 7:30 a.m.-4 p.m.; July 10, 1-4 p.m. The weekend features a book sale, margarita night (Friday, 6-8 p.m.) and antique appraisal sessions (Saturday-July 10, 1-4 p.m.) to raise funds for the museum. The public can bring up to five items weighing less than 20 pounds each. Gadsby's Tavern Museum, 134 N. Royal St., Alexandria. Reception $20-$25; appraisals $5 per item. 703-838-4242.

Movies

NERUDA FUGITIVE -- Tuesday at 6:30 p.m. Hugo Arevalo's documentary on the 13 months in which the poet Pablo Neruda lived in secret. In Spanish with English subtitles. Embassy of Chile, 1732 Massachusetts Ave. NW. Free. For reservations, call 202-530-4118.

SIMULTANEOUSLY COINCIDENTAL -- Tuesday at 9 p.m. The life of Washington resident John Lamm is chronicled in this story of drugs, religion, romance, paranoia and friendship. Black Cat, 1811 14th St. NW. $5. 202-667-7960.

10TH ANNUAL MADE IN HONG KONG FILM FESTIVAL -- Opens Friday. Through Aug. 28. The series of classic movies and new releases celebrating the history of the country's cinema opens with Johnnie To's 2004 comedy "Throw Down," about an alcoholic former judo champion. Arthur M. Sackler Gallery, 12th Street and Independence Avenue SW. Free. 202-357-2700.

REEL ARCHITECTURE -- Saturday, 11 a.m.-5 p.m. The museum celebrates its 25th anniversary with a film festival emphasizing American architecture on film. Saturday's films are "Liberty," "The Long Goodbye," "L.A. Story" and "Dogtown and Z-Boys." The series, which continues through Aug. 24, will also show "China Town," "Do the Right Thing," "Soylent Green," "Touch of Evil," "Who Framed Roger Rabbit" and more. National Building Museum, 401 F St. NW. Free. 202-272-2448.

Philosophy

IS POVERTY VOLUNTARY IN CAPITALIST SOCIETIES? -- Saturday at 1 p.m. A philosophical roundtable discussion with Cafe Philo DC, moderated by Ken Feldman. Brasserie Les Halles, 1201 Pennsylvania Ave. NW. Free. 703-751-5958.

GET LISTED. The Sunday Source lists events as space permits. E-mail or fax notices -- with dates, times, address, cost and phone number -- to sourcelist@washpost.com or 202-496-3537. Or mail them to Listings, Sunday Source, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071-5650. Deadline is two weeks before publication date.