To mark the 56th anniversary of the first human landing on the moon, CERN invites you to Science Gateway on Saturday 19 July 2025, from 4pm to midnight, for STELLAR, a summer science festival blending inspiring talks, hands-on workshops, children's activities and outdoor music, in a friendly atmosphere open to all.

Organised as part of the International Cosmic Ray Conference (ICRC) 2025, STELLAR is a unique opportunity to discover how the science of space, particles and astroparticles are shedding light on our understanding of the universe and preparing the world of tomorrow.

Throughout the afternoon and evening, the public will be able to attend captivating talks in French and English, given by leading speakers from the world of science and space, including Nobel Prize winners and astronauts. These talks will cover fascinating subjects such as the origin of the Universe, the search for exoplanets, the instruments of the future for exploring the cosmos, and the challenges of space exploration. The event will also highlight the research being carried out at CERN, in particular on the particles that travel through space and help us to better understand the immensity that surrounds us.

The full programme is available here

The United Nations declared 2025 the International Year of Quantum Science and Technology in recognition of the importance and potential of quantum technologies to accelerate progress towards achieving a more sustainable and equitable world. Quantum had therefore been chosen as the central theme for the 2025 season, highlighting CERN’s contribution to quantum theory and to the development of a new generation of quantum technologies for fundamental research and beyond.
 
For the 2025 season of public events, the audience, through our content, had the opportunity to learn about these strange effects at the sub atomical scale, and appreciate how fundamental research can offer us opportunities to not only further understand nature’s beauty, but also foster societal impact through its technological implementations.  
 
The Quantum! season was also a tribute to the people dedicating themselves towards pushing the boundaries of knowledge further through exploration and discovery, whether they are particle physicists, engineers, technicians, students, artists or anybody fueled by the thirst of science and innovation.  
 
To convey this fascinating topic to our audience, the season offers links to art and popular culture. Indeed, the word “quantum” is prevalent in popular culture; it grabs the attention and creates a sense of mystery, arousing curiosity. Events such as “Super Quantum!”, offering a link with the world of superheros, were an opportunity for CERN to demystify this topic, showing its fascinating effects in exciting and accessible ways. 

CERN’s public events have the support of the CERN & Society Foundation.