Physicists show knotted cosmic strings may have dominated the early universe before collapsing to create matter—a theory ...

While "The Big Bang Theory" and "The Andy Griffith Show" don't seem to have much in common, there is a small connection ...

Astronomers are rethinking one of cosmology’s biggest mysteries: dark energy. New findings show that evolving dark energy models, tied to ultra-light axion particles, may better fit the universe’s ...

At the heart of the Milky Way, just 27,000 light-years from Earth, there is a supermassive black hole with a mass of more ...

A Keio University team measured the cosmic microwave background temperature from 7 billion years ago at 5.13 K using ALMA, ...

The most massive stars in the universe are destined to explode as brilliant supernova before collapsing into black holes. Yet ...

A ‘superflare’ 10 trillion times brighter than the Sun is confirmed as the record-holder for both luminosity and distance.

This artist's concept depicts a supermassive black hole in the process of shredding a massive star—at least 30 times the mass of our Sun—to pieces. Scientists propose this is what happened around the ...