L.A. and O.C. museums: The newest and coolest to see in August

Rembrandt’s “Juno” is among the works on display as part of the Armand Hammer Collection at the Hammer Museum in Los Angeles. Union Station’s Passageway Art Gallery, 800 N. Alameda St., downtown L.A. unionstationla.com “Acting Out: Cabinet Cards and the Making of Modern Photography, 1870–1900” Examples of photographic portraits of celebrities and everyday people from the closing decades of the 19th century are on view through Nov. 7. Also on view: “Analogues: Travon Free,” photographs by the comedian and Oscar-winning filmmaker capture last summer’s street demonstrations in L.A. in response to the police killing of George Floyd in Minneapolis. 667-2000. theautry.org “Invisible Sun” Works by Julie Mehretu, Keith Haring and others from the Broad museum’s collection explore social justice; on view through Oct. 3. 723-6250. lancastermoah.org “The Swineherd” This 1888 painting by Paul Gauguin on loan from LACMA is exhibited with related post-Impressionist works in the museum’s 19th century art gallery; on view through Nov. 18.