Europe and the United States are working together on an unprecedented journey to learn more about the impact of the Sun on our planet, to really know what its atmosphere is like and how it affects our environment; since solar radiation increasingly affects our lives and telecommunications.

An incredible travel through space and time between the walls of the Paris Observatory, which is celebrating its 350th birthday. Place of discoveries such as speed of light or Neptune’s existence, it is still today one of the oldest operating observatories and the greatest hub in the world for astronomy and astrophysics researches, second only to Harvard.