The LISA Pathfinder will be looking for evidence of gravitational waves. Copyright: ESA/ATG medialab

An Artist's representation of the trajectory the LISA Pathfinder on its way to a relatively stable orbital path between the earth and sun (called a lagrangian point) where it will look for evidence of gravitational waves. Copyright: ESA/ATG medialab

© La Voix de l'Amérique - lundi 13 juin 2016