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The countdown to Mars Day is on!

Mars Day is an exciting free virtual event adventure for everyone, presented by the UK Space Education Office (ESERO-UK) at STEM Learning and in collaboration with the European Space Agency (ESA) and the UK Space Agency.

Mars Day has an out-of-this-world programme of live link-ups, activities and resources, talks and live Q&A with space stars as well as career discussions with hidden heroes of the UK space industry. 

Beam in to explore Mars, the International Space Station (ISS) - and beyond. Our mission to Mars (Day) in 2024 had an audience of over 200,000!

Explore a sky full of guest speakers and stars in our programme across the day. Land on your favourite Mars and ISS topics, book for a session or two, take part in Mars Hour activities, or join in for the whole day. Embark on a solo mission, join in with friends, family or your class at school.

Mars Day 2026 is coming soon.


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For one starry day, Mars Day 2025 included:

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More speaker stars than ever before from the European Space Agency (ESA) and the UK Space Agency

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Featured the International Space Station (ISS) as the 'Guest’ of the day, learning how ESA train astronauts to go to the ISS

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Starred hidden heroes of the UK space industry, revealing their journeys from studying STEM subjects to participating in space career missions here on Earth

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Beamed Tim Peake live into classrooms in Mars Hour with the chance to ask about his own mission to the ISS

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Ran classroom activities in Mars Hour with free space-themed resources

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Ran more exciting hands-on Martian activity sessions for primary schools to beam into

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Went behind-the-scenes with BBC Science team from the hit series ‘Solar System’ with Professor Brian Cox, revealing the enthralling story of the Martian dust devils

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Explored the ESA missions already planned for Mars with ESA experts - and those already on Mars!

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Landed on Mars over the week with partners offering out-of-this-world events and sessions for schools during Mars Week

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Mars Day is an official event run by ESERO-UK, funded by the European Space Agency and the UK Space Agency