042116i-usLights

Aggregation No. 1Rock ’n’ Roll Rumble Finals from 8 p.m. to 1 a.m. Friday at Once Lounge + Ballroom, 156 Highland Ave., Somerville. Tickets are $10 online and $15 at the door.

This year’s nine-night, 24-band showdown for top band in Greater Boston wraps up tonight, pitting the wildcard band, usLights, against Weakened Friends and Worshipper – with special guests Scissorfight rounding out the night. Information is here.

Aggregation-ornament-478

042116i-Acrobatic-Conundrum

Aggregation No. 2“Love & Gravity” acrobatic storytelling from 8 to 10 p.m. Friday and Saturday and at 3 to 5 p.m. Saturday at The Center for Arts at the Armory, 191 Highland Ave., Somerville. Tickets are $20 in advance or $25 at the door (or $17 in advance for the matinee or $22 at the door) or $15 for students and seniors.

The Acrobatic Conundrum circus troupe tells the stories of real-life romances through juggling acts and aerial and partner acrobatics – all while balancing on a bar 20 feet in the air. As the troupe describes it, the show is “seemingly free of the bounds of physics, but not free of the capricious struggle for human connection.” It features Carey Cramer, Terry Crane, Scotty Dont, Erica Rubinstein, Xochitl Sosa, Ty Vennewitz and local guests. Information is here.

Aggregation-ornament-478

042116i-George-Imirzian-sculpture-racing-b

Aggregation No. 3Community Sculpture Race and Exhibition from 10:45 a.m. to 2 p.m. Saturday at the soccer field in Danehy Park, Neighborhood 9. Free.

People’s Sculpture Racing was revived last year after a decades-long break, but people get their first peek at the sport this year at this four-tenths’ mile race on the loopy sidewalks around the soccer field at Danehy Park in northwest Cambridge, followed by an two-hour exhibition of the creative vehicles used during the race. (The basic criteria for entries is that the movement of the sculpture must be human-powered, though wheels must be integral to the work, and “the overriding aesthetic is spectacle,” allowing for use of sound art, costumes and kinetic features, and even elaborate performances based around the sculpture.) This Cambridge Science Festival event is a collaboration with the Parts and Crafts family makerspace in Somerville and Maud Morgan Arts in Cambridge and sponsored by the Cambridge Arts Council. Information is here.

Aggregation-ornament-478

042116i-Bookish-Ball-and-Shakespeare’s-Birthday-Celebration

Aggregation No. 4Ninth Annual Bookish Ball and Shakespeare’s Birthday Celebration from noon to 5 p.m. Saturday in Harvard Square. Free.

The Harvard Square Business Association, Cambridge Historical Tours and the bookstores of Harvard Square are again hosting this free, family-friendly festival with bookstore strolls, Shakespearian performances, live flute music and birthday cake – including a five-hour marathon of all 154 of the Bard’s sonnets. Don’t miss the performance of scenes in front of Harvard Square bookstores by actors from Cambridge Historical Tours and a sober set of actors from the “Shit-Faced Shakespeare” cast. The complete schedule and other information is here.

Aggregation-ornament-478

042116i-Tony-Buser-Tardis-b

Aggregation No. 5“Dimensions of Doctor Who” science event at 7 p.m. Saturday at The MIT Museum, 265 Massachusetts Ave., in the Area IV/The Port neighborhood near Central Square. Tickets are $10 in advance (or $11.54 with the online service fee) or $15 at the door.

A slew of serious experts from various fields are gathering to explore the science of the long-running “Doctor Who” television series, as well as to explain how their own work is bringing our world closer to that of The Doctor’s. The presentations running from 7 to 8:30 p.m. include “Why a Tardis Is So Hard to Build”; “Brain Mechanisms for Moral Decision-Making (Why the Daleks Don’t Care)”; “How the Silence Can Take Your Memories”; and “Using Shape-Shifting Matter to Get Bigger on the Inside,” and activities running from 8:30 to 9:30 p.m. that include “Translating English to Gallifreyan”; a community-knit scarf for The Doctor; and a Tardis scavenger hunt. There will be a cash bar, and cosplay is welcome. Information is here.