Each of these Hubble Space Telescope snapshots reveals four distorted images of a background quasar surrounding the central core of a foreground massive galaxy. The multiple quasar images were produced by the gravity of the foreground galaxy, which is acting like a magnifying glass by warping the quasar’s light in […]

A new study by a group of researchers at the University of Birmingham has found that collisions of supermassive black holes may be simultaneously observable in both gravitational waves and X-rays at the beginning of the next decade. The European Space Agency (ESA) has recently announced that its two major space observatories of the […]

Artist’s rendering shows G objects, with the reddish centers, orbiting the supermassive black hole. The black hole is represented as a dark sphere inside a white ring (above the middle of the rendering). Credit: Jack Ciurlo / UCLA Astronomers from UCLA’s Galactic Center Orbits Initiative have discovered a new class […]

Artist’s impression of gamma-ray burst with orbiting binary star. Credit: University of Warwick/Mark Garlick Stars need to be in binary systems to create gamma-ray bursts, University of Warwick study finds Gamma-ray bursts are the Universe’s brightest explosions, caused by massive collapsing stars The tidal effects from a companion star keep […]

Two galaxies in the process of merging. Credit: NASA/ESA/Hubble When two galaxies merge, there are brief periods of stellar baby booms. A group of astronomers led by Lingyu Wang from SRON have now used a sample of over 200,000 galaxies to confirm that galaxy mergers are the driving force behind […]

Various heavy metals with unique wavelength signatures are produced in an explosion following a merger of binary neutron stars. These metals are then incorporated into newly forming stars where their signatures can be observed. Credit: University of Tokyo, NAOJ Astronomers have cataloged signs of 9 heavy metals in the infrared […]