Adler Planetarium

The Adler Planetarium is a municipal public museum for astronomy in Chicago, Illinois, United States. It is operated by the Chicago Park District, a municipal government agency of the City of Chicago. It is the first planetarium in the United States.

It was founded in 1930 by local businessman Max Adler. Located on the northeastern tip of Northerly Island on Lake Michigan, the Adler Planetarium was the first planetarium in the United States. It is part of Chicago's Museum Campus, which includes the Shedd Aquarium and the Field Museum of Natural History. The Planetarium's mission is to inspire exploration and understanding of the universe.

The Adler Planetarium opened to the public on May 12, 1930. Its architect, Ernest A. Grunsfeld Jr., was awarded the gold medal of the Chicago chapter of the American Institute of Architects in 1931 for its design. In 1987, it was declared a National Historic Landmark.

The Adler has three theaters, space science exhibitions, including the Gemini 12 space capsule, and a collection of antique scientific instruments and print materials. In addition, the Adler Planetarium hosts the Doane Observatory, a research-active public observatory.

The planetarium is surrounded by sculptures including: Man Enters the Cosmos by Henry Moore (1980); Spiral Galaxy by John David Mooney (1998); and America's Courtyard by Ary Perez and Denise Milan.