In-Flight STEM Downlinks Expedition 74 proposal period is now closed. For Expedition 75 downlink proposals, look for more information this fall.
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.

Upcoming Downlink Events

The following information is subject to change.

July 14, 2025
9:05 a.m. – 9:25 a.m. Central Time (Tentative)
Seacamp Association
Big Pine Key, Florida
Astronauts Jonny Kim and Anne McClain
Watch on NASA STEM’s Youtube channel

September 5, 2025
9:00 a.m. – 11:00 a.m. Central Time (Tentative)
The Computer School
New York, New York
Astronauts Jonny Kim and Kimiya Yui
Watch on NASA STEM’s Youtube channel