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About Astro Pi

What is Astro Pi?

The European Astro Pi Challenge offers young people the amazing opportunity to conduct scientific investigations in space by writing computer programs that run on Raspberry Pi computers aboard the International Space Station (ISS).

About the computers

The International Space Station (ISS) with Earth in the background.


As part of British ESA astronaut Tim Peake’s Principia mission (2015–2016) on the ISS, two space-hardened Raspberry Pi computers, called Astro Pis, equipped with environmental sensors, were sent to the ISS and used to run students’ and young people’s programs, with ISS crew support. As well as Tim Peake, ESA astronauts Thomas Pesquet, Paolo Nespoli, Alexander Gerst, David Saint-Jacques (CSA astronaut), Luca Parmitano, Matthias Maurer and Samantha Cristoforetti have all acted as ambassadors for the challenge.

Astronaut Tim Peake holding an Astro Pi computer

Mark II hardware

After two years of secret development, upgraded Astro Pi VIS and Astro Pi IR computers arrived on the ISS in December 2021. They were first used to run Mission Zero and Mission Space Lab programs as part of the European Astro Pi Challenge 2021/22.

They were named by Mission Zero participants in 2022 after the two inspirational European scientists Nikola Tesla and Marie Skłodowska-Curie.

Learn about the sensors

The Astro Pi VIS (left) and Astro Pi IR (right) computers in their flight cases


  • 28,126
    young people participated in 2021/22
  • 26
    countries participated across Europe and Canada in 2021/22
  • 44%
    Female representation across the Astro Pi Challenge 2021/22
  • Increase in Media attention raised the profile of STEM education

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