Astronomy on Tap at DC9: Astronomy on Tap, a national network of space-related gatherings held at bars, allows anyone to geek out about the cosmos with a drink in hand. Each session at DC9 includes short talks by scientists — NASA employees, Smithsonian researchers, professors from local universities — followed by a trip up to the club's rooftop deck to use telescopes loaned by the National Air and Space Museum. This month's topics include the formation of black holes and findings from the Rosetta mission, which spent two years circling a comet. 7:30 p.m. Free.
Haim and Lizzo at the Anthem: Haim released sophomore album “Something to Tell You” way back in July, and the sister act is finally getting around to bringing its accompanying “Sister Sister Sister” tour to D.C. The trio, which draws heavily (and equally) on Fleetwood Mac, pop radio and R&B, has had plenty of time to perfect its hooky songs in a live setting. Expect the sisters, augmented by extra backing musicians, to mix songs from both Haim albums and to break out a cover of Shania Twain’s “That Don’t Impress Me Much.” “Good as Hell” rapper Lizzo opens the show. 8 p.m. $45-$65.
Moneybagg Yo at U Street Music Hall: In the world of rap, Memphis is having a moment. Not only is the sound created by Three 6 Mafia in the ’90s finding new life in recent hits from G-Eazy and Cardi B, but the city’s younger voices also are finding fresh audiences. The comical Blac Youngsta has been a standout, while Blocboy JB’s “Look Alive” became a top-10 single, thanks to a cameo by Drake. Then there’s Moneybagg Yo, whose last two projects — “Federal 3x” and “2 Heartless” — each cracked the Billboard 200. Both are filled with lucid street tales and gritty candor — a testament to where he’s been and a promising indicator of where he’s headed. 7 p.m. $20-$25.
Washington Jewish Film Festival: Screening 57 features and 23 shorts about the diversity of the Jewish experience, the Washington Jewish Film Festival kicks off at the Edlavitch D.C. Jewish Community Center with “Sammy Davis, Jr.: I’ve Gotta Be Me,” a documentary portrait of the late entertainer, who, after an automobile accident in which he lost his left eye, began studying — and eventually converted to — Judaism. (A second screening is May 6 at the AFI Silver Theatre.) One focus of the festival, in its 28th year, is trailblazing women. Films selected under that theme include “RBG,” a new documentary about Supreme Court Justice Ruth Bader Ginsburg, above, that screens Thursday at 6:15 p.m. at Bethesda Row Cinema, before the film’s commercial release May 4. Through May 13. Screenings $13.50 in advance and $15 at the door. Festival passes $40-$275.
Songs of Protest, Hope and Outrage at Gypsy Sally's: More than a dozen musicians from the D.C. area, including Jon Carroll of the Starland Vocal Band, are joining forces at Gypsy Sally's to raise money for the Shine MSD Fund, a nonprofit organization supporting victims and survivors of the shooting at Stoneman Douglas High School. Expect to hear protest anthems and politically minded pop hits dating from the '60s to today. 8 p.m. $15.
The Black Rooster Pub's Last Stand: After 48 years in the heart of downtown D.C., the Black Rooster Pub is closing its doors this week. Owner Jody Taylor announced the demise of the pub with “tremendous regret and personal sorrow,” due to the end of its lease. Thursday is the beginning of a three-day party to send off the unpretentious watering hole. Taylor says Friday will be “the big evening,” which means you might want to go on Thursday to beat the crowds. Through May 5. Free admission; Drinks priced individually.
Royal Wedding Pop-Up Bar opens: Victories in the Revolutionary War and the War of 1812 did nothing to dampen Americans' ardor for the British royal family. Why else would people wake up at an ungodly hour on a Saturday morning to put on fascinators and head out to watch an American actress marry the man who's sixth in line to the throne? While restaurants and hotels around the city are hosting themed parties and teas, few places are going as far as Shaw's Pop Up Bar, which will be honoring Prince Harry and Meghan Markle's nuptials with a two-week celebration. Expect cocktails decorated with edible glitter, a gilded “throne room” for selfies, and a raffle for a replica of the royal wedding cake, baked by a chef at the British Embassy. Open at 5 p.m. daily through March 20. Free; Cocktails $13-$14.
National Cathedral Flower Mart: The 79th annual Flower Mart is a true celebration of the season. Booths outside Washington National Cathedral sell garden plants and herbs, while the Cathedral's nave is filled with floral arrangements created by neighboring embassies. The two-day festival includes music and dance performances, dozens of vendors selling food and gifts and, on Saturday only, tours of the Cathedral towers. Children can ride the antique carousel, watch puppet shows or try winning the carnival games. 10 a.m. to 6 p.m. Friday and Saturday. Admission free; tours $20.
Fridays at the Fountain in Crystal City: Crystal City is full of offices, but it's not much of an after-work destination. Enter Fridays at the Fountain, a weekly outdoor happy hour at the Crystal City Water Park. Relax in a hammock or dip your feet in the fountain while listening to local bands and sipping beer and wine, or purchase dinner from food trucks and restaurants. Blues-rock band Revelator Hill opens the event for the season. 5 to 9 p.m. Free.
Esperanza Spalding at the Library of Congress: Singer, bassist and composer Esperanza Spalding straddles jazz, neo-soul and funky pop music like no one else, borrowing from genres as she sees fit. The Library of Congress has commissioned an original piano and violin concerto from Spalding, who's currently a professor of music at Harvard, and it will be performed for the first time at this concert. While all tickets were given away back in December, the Library will have a limited number of “rush tickets” available at the door two hours before the show. 8 p.m. Free.
— Fritz Hahn, Adele Chapin, Rudi Greenberg, Michael O'Sullivan and Briana Younger