LAB
Experiment & understand
Science in real life: observe, measure, understand — together, under the open sky.
The open-air collaborative science lab.
Touriver Lab is a participatory science platform that reconnects real-world observation, history's great experiments, and modern digital tools.
COMPARE ELSEWHERE.
UNDERSTAND TOGETHER.
One field, many sciences
The Lab isn't limited to astronomy — it covers everything you can measure and understand about the real world.
Ongoing flagship project
The national experience launching the Touriver Lab program.
Eratosthenes: Morocco measures the Earth
Reproducing, 2,200 years later, the measurement of the Earth's circumference — nationwide, with a dedicated app to compare results between cities.
SEPTEMBER 23, 2026 Join the app →
Understanding starts in the field, not in a book. Every workshop begins with a real observation.
What's next in the program
After Eratosthenes, three more historical experiences await at the Lab.
Sun & shadow coming soon
Measuring time and angles like the earliest astronomers.
Moon & crescent coming soon
Observing and understanding lunar phases over time.
Pole Star coming soon
Finding your way in the night sky like ancient navigators.
Lunar parallax advanced experience
Calculating a celestial distance by triangulation, across a national network.
Keep exploring
TOURIVER