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NASA astronauts Chris Williams and Zena Cardman, both Expedition 74 Flight Engineers, work on spacesuit maintenance inside the International Space Station’s Quest airlock on Dec. 16, 2025.Credit: NASA
NASA astronaut Chris Williams will connect with students in Pennsylvania to answer prerecorded science, technology, engineering, and mathematics (STEM) questions while aboard the International Space Station.
The Earth-to-space call will begin at 12:20 p.m. EST Thursday, Feb. 5, and will stream live on the agency’s Learn With NASA YouTube channel.
Media interested in covering the event must RSVP by 5 p.m., Wednesday, Feb. 4, to Tamara Krizek at: 917-692-5038 or tamara.krizek@davincisciencecenter.org.
The Da Vinci Science Center will host this event in Allentown, Pennsylvania, for students in kindergarten through grade 12, and members of the community. This unique opportunity aims to deepen understanding of space exploration and inspire young people to pursue a future career in STEM.
For more than 25 years, astronauts have continuously lived and worked aboard the space station, testing technologies, performing science, and developing skills needed to explore farther from Earth. Astronauts communicate with NASA’s Mission Control Center in Houston 24 hours a day through SCaN’s (Space Communications and Navigation) Near Space Network.
Research and technology investigations taking place aboard the space station benefit people on Earth and lay the groundwork for other agency deep space missions. As part of NASA’s Artemis campaign, the agency will send astronauts to the Moon to prepare for future human exploration of Mars, inspiring the world through discovery in a new Golden Age of innovation and exploration.
See more information on NASA in-flight calls at:
https://www.nasa.gov/stemonstation
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Gerelle DodsonHeadquarters, Washington202-358-1600gerelle.q.dodson@nasa.gov
Sandra JonesJohnson Space Center, Houston281-483-5111sandra.p.jones@nasa.gov
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Last Updated
Feb 02, 2026
EditorJessica TaveauLocationNASA Headquarters
Related TermsIn-flight Education DownlinksHumans in SpaceInternational Space Station (ISS)NASA STEM Projects