Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

The Stratospheric Aerosol Measurement 1 (SAM 1) instrument flew on the 1976 Apollo-Soyuz mission. It served as a proof-of-concept for a series of follow-on scientific instruments that studied the role of small particles (aerosols) over the Earth's polar regions, including those generated by human activity. Such data provided better understanding of the atmosphere as a physical system.

SAM 1 initiated a line of research that helped gather data on and model the ozone hole over the Antarctic. Operated by Apollo-Soyuz astronauts, SAM 1 was returned to Earth and subsequently transferred from NASA to the Museum in 2017.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum

Credit Line

Transferred from NASA


Aluminum, copper, plastic


Overall: 19.7 w × 22.9 h × 11.4 d cm (7 3/4 × 9 × 4 1/2 in.)

Country of Origin

United States of America



Inventory Number