Second only to black holes, neutron stars—incredibly dense star remnants—are the densest objects in the universe. When ...

A powerful "gamma-ray burst" has been seen exploding from merging neutron stars hidden within a previously unknown ...

A new analysis of the neutron star merger known as GW170817 has delivered the most precise measurement yet of the Hubble ...

Add Yahoo as a preferred source to see more of our stories on Google. The most luminous kilonova candidate to date (short gamma-ray burst 200522A) was detected using the Hubble Space Telescope, Swift ...

A new study says the cataclysmic event of two neutron stars colliding may also have solved the mystery of why there are so many heavy elements in the universe. Share on Facebook (opens in a new window ...

A fleet of NASA missions has likely uncovered a collision between two ultradense stars in a tiny galaxy buried in a huge stream of gas. Astronomers have never seen this type of explosive event in an ...

New simulations of neutron star mergers reveal that the mixing and changing of tiny particles called neutrinos impacts how the merger unfolds, including the composition and structure of the merger ...

Astronomers have spotted a jaw-dropping collision between two neutron stars – and it may have produced gold and platinum. The discovery in a tiny, faraway galaxy is the first time this has been seen ...

When the remnants of two stars collide, their union can launch a dazzling jet of high energy matter. A new computer simulation reveals how the merger, which forms a black hole, emits that bright beam, ...

An international team of scientists has found that several hundred atoms of the isotope Pu-244 plutonium found in ferromanganese rock raised from the bottom of the Pacific Ocean are traces of a ...