March 20 is the first day of spring, but we also celebrate in France the night of gravitational waves. Predicted 100 years ago by Albert Einstein, gravitational waves were observed for the first time on September 14, 2015 using giant Ligo interferometers in the United States. They are produced in particular by extreme cosmological phenomena such as the fusion of two black holes or the existence of binary pulsars. They propagate in the universe at the speed of light, traverse matter and have the peculiarity of distorting space-time during their passage. The two artistic performances of Choubaka below give us an illustration of the contraction and the expansion of the space to the passage of a gravitational wave (photo credit: NASA).
At the end of this demonstration, Choubaka succeeded in transcending space and time, in experiencing in its fullness the gravitational energy of the cosmos and then felt a kind of metaphysical ecstasy, of spiritual awakening.