Instrument, Stratospheric Aerosol Measurement, ASTP


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:

Inventory Number


Credit Line

Transferred from the National Aeronautics and Space Administration, Langley Research Center

Country of Origin

United States of America


  • HAZMAT: Cadmium
  • Ferrous Alloy
  • Non-Magnetic White Metal
  • Anodized Aluminum
  • Paint
  • Possible Phenolic Resin
  • Copper Alloy
  • Plastics
  • Glass
  • Electrical Components
  • Paper
  • Ink
  • Adhesive


3-D (Overall): 22.2 × 19 × 10.8cm (8 3/4 × 7 1/2 × 4 1/4 in.)

Data Source

National Air and Space Museum

Restrictions & Rights

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