The European Space Agency and NASA have greenlit their Laser Interferometer Space Antenna (LISA) project — a gigantic space-based gravitational wave detector set to detect the ripples in space-time caused when the huge black holes at the centers of galaxies collide with other massive objects.
The detector will consist of three spacecraft floating 1.6 million miles (2.5 million kilometers) apart, forming a triangle of laser light that can detect distortions in space caused by the universe-rattling impacts of neutron stars and black holes.
