This is the first time, scientists have directly detected gravitational waves - ripples in space and time - in addition to light from the spectacular collision of two neutron stars. To get these sounds, astronomers used the U.S.-based Laser Interferometer...

Quasars are the brightest objects in the Universe. TON 618 is a very distant and extremely luminous quasar. It is an accretion disc of intensely hot gas swirling around the largest black hole known to mankind.