The proposal period for In-Flight STEM Downlinks Expedition 75 is September 4 – October 2, 2025.
Please reach out to the Downlinks team at JSC-Downlinks@mail.nasa.gov with questions.

In-flight STEM Downlinks allow participants and facilitators to interact with astronauts onboard the International Space Station. These opportunities are available to both formal and informal U.S.-based organizations.

Expedition 75 In-Flight STEM Downlinks will tentatively occur between July 2026 – February 2027.

To Apply for an In-Flight STEM Downlink visit Apply for a Downlink – NASA.

Upcoming Downlink Events

The following information is subject to change.

October 7, 2025
11:25 a.m. – 11:45 a.m. Central Time (Tentative)
DaVinci Science Center
Allentown, Pennsylvania
Astronauts Michael Fincke and Zena Cardman
Watch on Learn With NASA’s Youtube channel

October 21, 2025
9:00 a.m. – 11:00 a.m. Central Time (Tentative)
Queens Borough Public Library
Flushing, New York
Astronauts Michael Fincke and Zena Cardman
Watch on Learn With NASA’s Youtube channel

November 4, 2025
10:00 a.m. – 12:00 p.m. Central Time (Tentative)
Utah State University Space Dynamics Laboratory
North Logan, Utah
Astronauts Jonny Kim and Zena Cardman
Watch on Learn With NASA’s Youtube channel

November 10, 2025
9:00 a.m. – 11:00 a.m. Central Time (Tentative)
University of Missouri Pre-Employment Transition Services Program
Columbia, Missouri
Astronauts Michael Fincke and Kimiya Yui
Watch on Learn With NASA’s Youtube channel