The principle of this space mission is to measure the interference between laser links exchanged between three satellites in heliocentric orbit. The signatures of gravitational waves are imprinted in these interferometric measurements and need to be extracted from the instrumental noise.
By simultaneously resolving several tens of thousands of galactic binary systems, the LISA mission represents an opportunity to learn more about the internal physics of compact stars (neutron stars and white dwarfs), as well as the properties of space-time in the environment of compact bodies.