The universe hosts events so powerful that they dwarf anything humans can imagine. From magnetar flares and neutron star ...

A new study published in Nature Astronomy indicates that the dense, star- and dark-matter–rich environments around supermassive black hole binaries pack on the order of a million solar masses into ...

According to new research, gravity may have been able to create light. During expansion, right after the Big Bang, gravitational waves may have built on each other to create huge standing waves of ...

A subtle gravitational-wave “hum” from merging black holes may help settle the cosmic fight over how fast the universe is ...

When the densest objects in the universe collide and merge, the violence sets off ripples, in the form of gravitational waves ...

Neutron stars, the remnants of massive stars that have exploded as supernovae, cram more mass than the Sun into a sphere barely 20 kilometers wide. Their gravity is billions of times stronger than ...

General Relativity continues to provide a robust framework for understanding the interplay between gravitational waves and the cosmological constant. Gravitational waves—ripples in the fabric of ...

A group of researchers have made a shocking discovery about one of the most fundamental forces in our universe. According to a new paper, which is set to publish in Physics of the Dark Universe next ...

Energy-momentum distribution remains a fundamental yet challenging aspect of theoretical physics. In general relativity, the localisation of gravitational energy is obscured by the equivalence ...