An illustration of the unprecedented 'oval' orbit of black-hole-neutron-star system. The odd orbit points to a gap in our understanding of how these systems can form. . | Credit: Geraint Pratten, ...

Colliding oxygen nuclei has produced evidence of the hot, dense matter that filled the universe shortly after the Big Bang.

Astronomers set their sights on an area incredibly far away — more than 90 percent of the way across the observable universe — and found the beginnings of a massive cosmic collision, according to two ...

Astronomers have detected a neutron star collision in an unexpected place, deep within a tiny, faint galaxy. Located about 4.7 billion light-years away, this collision occurred within a vast gas ...

A collision of two massive clusters of galaxies when the universe was half its current age should not have happened according to the standard theory of cosmology, says a new study by an international ...

This cosmic explosion rippled through space-time. Finding more like it could solve mysteries such as the reason behind the universe's expansion. Gravitational waves are huge disturbances in the fabric ...

Two distant black holes will smash into each other, releasing more energy than 100 quintillion Earths full of TNT, and new research has just moved up the timeline for the explosion. Earlier this year, ...

A so-far unseen celestial collision could be astronomers' best bet for figuring out just how quickly the universe is expanding. Right now, physicists have two ways of measuring that expansion rate, ...

The universe-shaking collision of a black hole and a neutron star just led astronomers to a strange type of orbital interaction never seen before, and it's forcing them to rethink their theories.

A collision of two massive clusters of galaxies when the Universe was half its current age should not have happened according to the standard theory of cosmology, says a new study by an international ...

This article predates the current owners of Science Blog. It has not been reviewed under the current editorial process and is kept as part of the archive. A collision of two massive clusters of ...