Eyes on the sky: a rare solar eclipse will be visible from CERN on 12 August – Home
A deep partial solar eclipse will be visible from CERN on 12 August 2026, with 93% of the Sun obscured. Observers are advised to use proper eye protection throughout the event.
On 12 August 2026, a solar eclipse will be visible from CERN, with Geneva experiencing a deep partial eclipse. At maximum coverage around 20:20 CEST, approximately 93% of the Sun will be obscured by the Moon. The eclipse begins at 19:26 CEST and ends shortly before sunset, offering a rare celestial event for the region. Observers are reminded that direct viewing without protection can cause permanent eye damage, as the retina lacks pain receptors.
The eclipse will occur with the Sun low in the western sky, so a clear horizon is recommended for the best view. As daylight fades, observers may notice unusual lighting and a slight temperature drop, though the remaining sunlight remains hazardous to the eyes. The Swiss Federal Office of Public Health has issued guidance on safe observation practices for the event.
Members of the CERN community are advised to take precautions, including using certified eclipse glasses or indirect viewing methods. The CERN Medical Service is available for any concerns related to eye safety during or after the eclipse. No direct viewing of the Sun is safe without proper protection at any phase of the eclipse.
Those experiencing blurred vision, dark spots, or changes in central vision after observing the eclipse should seek immediate medical advice. The event presents an opportunity to witness a significant astronomical phenomenon while prioritizing eye safety and encouraging others to do the same.