Wikimedia Commons Scientists in Europe are looking for a site for a next-generation gravitational wave detector. Gravitational waves — tiny distortions of spacetime caused by movements of massive objects — were predicted in Einstein’s general theory of relativity in 1915, but not detected for a century, when the “sound” of two black holes colliding was recorded using ultra-precise laser measurement. The discovery allows scientists to study bits of the universe not visible to electromagnetic waves, notably collisions of neutron stars in which heavy elements such as gold are believed to be made. The new triangular model detector, each side measuring 10 km (6 miles), will be buried underground, work alongside more traditional observatories, and, appropriately, be called the Einstein Telescope. |