3 fascinating things coming up in Marin

• Marin resident and NASA Solar System Ambassador Ron Rosano, who recently returned from a suborbital space flight, will speak about his experiences and show photos and videos from the mission at 2 p.m. Saturday at the Larkspur Library at 400 Magnolia Ave. in Larkspur. Admission is free. Visit larkspurlibrary.org.

• Headlands Center for the Arts presents a supper and “spiritual drag show” with artist Việt Lê, shaman Bin Vương and University of Southern California anthropology and religion professor Janet Hoskins at 5 p.m. Sunday at Headlands Center for the Arts at 944 Simmons Road in Sausalito. Admission is $40 to $50. Visit headlands.org.

• Tamalpais High School’s Conservatory Theatre Ensemble performs Patricia Gray’s stage adaptation of J.R.R. Tolkien’s “The Hobbit” at 7 p.m. Dec. 4 through 9 and 1 p.m. Dec. 9 at Tam High’s Caldwell Theatre at 700 Miller Ave. in Mill Valley. $12 general admission for adults; free for students. Visit tamhighfoundation.org/events.