For thousands of years we have been looking at the universe with our eyes.
Since September 14th , 2015, everything is different: Gravitational waves were discovered! Gravitational wave astronomy on the earth has become routine. Laser interferometers will soon be able to listen to low frequencies with detectors in space. Since 30 years we have been developing the LISA mission. With the mission adoption this year we will enter the Phase B2 to approach a mission launch in 2035.