Organized by CNES and Planète Sciences, the event brings together young people and professionals around a common passion: space. More than two hundred participants are expected to attend the event at the Ger camp, near Tarbes (Hautes-Pyrénées). During the "official" day on July 21, CNES and Planète Sciences will offer exhibitions, demonstrations, and expert discussions in parallel with scientific experiments performed by young students.The event will be broadc


OpenRadiation is back and proposes a day of exchange open to all on FRIDAY 8 APRIL 2022 (9.30am - 3.30pm).

On the programme, testimonies from the European OpenRadiation community, but also OpenRadiation under the scanner of an ethnosociologist and participative workshops on the development of the project in all directions.

Register for this day (still in remote mode) and let's shake our brains together!

Here is the link to confirm your participation and receive the practical details of the day:

OpenRadiation is organizing a day of exchange on January 17, 2022, open to all.

The program will include testimonies from the European OpenRadiation community, but also OpenRadiation examined by an ethnosociologist and participative workshops on the project's development.

Register for this day (remote...5th wave) to shake our brains together!

Here is the link to confirm your participation and review the practical details of the day:


The health crisis does not allow to maintain the OpenRadiation community day.

It will be postponed to a later date (early 2022).

The organization team thanks you for your understanding.


The Openradiation team is pleased to invite you to the User Community Days.

This year 2021 will give us two opportunities to meet: 

Thursday, June 17, 2021, by videoconference (Teams)

Monday, September 20, 2021, in person (IRSN Amphitheater, Fontenay-aux-Roses)

Do not hesitate to contact us by email to receive your invitation to this OpenRadiation event!


Argo and its navigator Olivier Merbeau left the port of La Rochelle at the end of February, with the mission to measure the radioactivity of the atmosphere thanks to the OpenRadiation sensor.

After the loss of the Taranis satellite, heading for Taranis 2.

The French space agency would like to study a new mission dedicated to the strange phenomena of light flashes above thunderstorms.

The Centre national d'études spatiales (CNES), through its president Jean-Yves Le Gall, has asked all the parties involved in the project to prepare a Taranis 2 mission.

A dossier should be produced by the end of January 2021, after a mid-December progress report.


The European launcher Vega was eagerly awaited to take off last night, but it finally failed... Indeed, at T+8 minutes before take-off, the ground teams noticed a deviation in the telemetry data. Unable to catch up with its trajectory, the upper stage never reached orbit with its satellites, including Taranis. It probably disintegrated on re-entering the atmosphere somewhere in the North Atlantic.

The Taranis satellite will be launched into orbit from the Kourou space base on the night of 16-17 November 2020.

Piloted by CNES, the mission aims to better understand certain transitory light and radiation phenomena observed above storms (elves, sprites, blue jets, "terrestrial gamma flash" (TGF), etc.) and will last about four years.

To complete the Taranis mission, educational projects will involve young people and, more broadly, citizens in scientific observation from the ground (Belisma project) and in flight (cosmic on air project).  

OpenRadiation is present at the "Fête de la Science" which welcomes us to the Museum of Natural History.

Book your visit time and come and join us SATURDAY 10 AND SUNDAY 11 OCTOBER !

We look forward to seeing many of you!


From 2nd to 11th October 2020, every day at 5.30 pm, Fred Courant and the Esprit Sorcier team invite you to celebrate science! #ScienceEnDirect

On Saturday 3 October, François Trompier and Ghislain Darley from the Institute for Radioprotection and Nuclear Safety (IRSN) invite you live to discover cosmic radiation and the participatory science project: Cosmic-on-air.

The vocation of CASPA is to constitute a community of interest and practice open to all types of profiles (teachers, students, environmental leaders, territorial agents, entrepreneurs, citizens...) in order to federate energies, to mutualize feedback and to share good practices with the greatest number of people.

OpenRadiation has joined the CASPA projects!


There you go! More than 200,000 measurements are now recorded in the OpenRadiation database.

Many thanks to all of you who, through your investment and contributions, bring this project to life!

Let's continue to mobilize ourselves so that the OpenRadiation community grows in France and all over the world.

The second day of the OpenRadiation community is announced in 2021.
You were already at the Halle Pajol in Paris in January 2020 (or you would have liked to be there and this time, for sure, you will participate!), do not hesitate to share with us your remarks and suggestions to make this future event even more useful for the community.

Ideas of places to meet (in the Paris region), themes to suggest, everything interests us!

More than 80 enthusiastic participants gathered on Monday 13 January in the Pajol Hall in Paris.

The event, designed to encourage the meeting between the contributors of the OpenRadiation project and the sharing of their experiences in participatory science, was very much appreciated. The project of a community day in 2021 is already launched!

The OpenRadiation contest "my sensor in an unusual place" continues until September 2020.

Take your turn and send us your photo to



On December 14 and 15, 2019, from 1pm to 6pm, come and discover participatory science through several activities at the Cité des sciences et de l'industrie (  (free event, open to all). Learn to recognize meteorites and impact craters and participate in scientific research in planetology within the Vigie-Ciel community.

You can also attend the three evenings of lectures at the Institut de l'astrophysique de Paris (