Every Fri. Moderate-paced ride, 20 miles or more, to Dexter and beyond. Pack a lunch or stop in Dexter. See aabts.org for weather cancellations or delays. 9 a.m. sharp, meet at Delhi Metro Park parking lot (left of the tollbooth), E. Delhi off Huron River Dr. Free. [email protected].   

Every Fri. Slow/moderate-paced 18-mile gravel road ride with a rest stop at St. John’s Evangelical Lutheran Church. See aabts.org for weather cancellations or delays. 9 a.m. sharp, meet at Olson Park, 1515 Dhu Varren. Free. (412) 302–9960.  

Every Tues.–Sun. All age 6 & up invited into the museum’s labs to use scientific tools and museum specimens to answer questions and solve problems. The newest program lets participants try out simulated snake senses to experience the world as if they were a snake. Also, models of snake brains available to examine, but no live snakes. 11 a.m.–3 p.m., 1105 North University. Free. (734) 764–0478, ummnh.org.  

Every Friday May 15–Sept. 25. Local food trucks. Bring a picnic blanket and chairs to picnic in the park. 11 a.m.–7 p.m., County Farm Park, 2230 Platt. facebook.com/MLMRecCenter.

See 16 Thursday. Today:

Ingalls Mall Fountain Stage (between E. Washington & North University): young Detroit-area pop-folk singer-songwriter Lily Bowen (11 a.m.), local alt-folk singer-songwriter Tom Alter (noon), veteran Detroit folk-rock singer-songwriter Mike Ward (1 p.m.), veteran local singer-guitarist John D. Lamb (2 p.m.), an energetic, sophisticated blend of danceable soul, blues, and rock by the Ralph McKee Blues Trio (3 p.m.), the local folk-rock singer-songwriter duo So Say We All (4 p.m.), the Detroit pop-folk singer-songwriter Michelle Held (5 p.m.), the Detroit folk-pop singer-songwriter Emily Rose (6 p.m.), and Misty Lyn & the Big Beautiful (8 p.m.), a veteran local country-inflected folk-rock quintet led by Misty Lyn Bergeron, a singer-songwriter known for her haunting melodies and poetically rich lyrics. 

Music on Maynard (William & Maynard): lineup TBA.

The Ark Stage (Palio parking lot at E. William & S. Main): The Rupple Brothers (6 p.m.), a Saginaw-area acoustic pop-folk trio with an air of psychedelia, and Bobby Alu (7:30 p.m.), a Samoan-Australian singer-songwriter, drummer, and ukulele player whose music blends elements of tropical folk, roots reggae, and Polynesian rhythms. 11 a.m.–9 p.m.

Every Wed., Fri., & Sat. All invited to play one of 200 songs, with melodies transcribed in numbers, on the 17-bell chime’s numbered keys. Ambitious players can add chords. Kids welcome. Noon–12:30 p.m. (Wed. & Fri.) & 10:30–11 a.m. (Sat.). Free. [email protected].

All invited to bring anything that needs fixing—chairs, sweaters, radios, whatever. Maker Works members and staff on hand help with repairs. Handy people invited to assist. Repairs not guaranteed. Also, toy adaptations to make off-the-shelf toys more accessible for people with disabilities. 4–6 p.m., 3765 Plaza. Free. Preregistration required at maker-works.com/fixitfriday, (734) 222–4911.  

See 3 Friday. Tonight: Petty Thieves, a Tom Petty and Stevie Nicks tribute band. 6:30–9 p.m.

July 11, 15, 16, & 17. Students from this U-M music school performing arts summer program perform chamber works TBA. 7 p.m., Britton Recital Hall, 1100 Baits. Free. centerstagestrings.com.

All invited to learn how photographers, artists, and scientists work together to create visual images of the universe. Then, create your own 3D models from images taken through Observatory telescopes. 7–9 p.m., 1398 E. Ann at Observatory. Free. (734) 763–2230, detroitobservatory.umich.edu.

Talk by retired U-M history & astronomy professor Rudi Lindner. 7:30 p.m., U-M Detroit Observatory, 1398 E. Ann at Observatory. Free. (734) 975–3248.

A variety of women and trans comics try out new material with a veteran comic presiding to offer feedback. 8–10 p.m., 100 S. Fourth Ave. Free, but purchase of food and drink encouraged. (734) 548–9729, drinkblom.com/events.

Every Fri. All invited to drop in to use the Observatory’s 1857 Fitz telescope and other modern instruments. Exhibits are also open regardless of viewing conditions. Last visitors admitted 30 minutes prior to closing. 9–11 p.m., 1398 E. Ann at Observatory. Free, no registration required. (734) 763–2230, detroitobservatory.umich.edu.