Have a question you've always wanted to ask an astronaut? Here's your chance! NASA astronaut Randy “Komrade” Bresnik and ESA astronaut Paolo Nespoli join STEM in 30 to talk about their recent six-month stay on the International Space Station (ISS). Submit your questions here, or on our Facebook Live stream of the program at 11:00 am EST.

Can’t catch the show live? Check out some space experiments with “Komrade” Bresnik by visiting ISS Science.