A faint radio "whisper" from ancient hydrogen reveals the universe was heating up long before it filled with starlight.

Scientists have been using complicated, hypothetical particles to explain the Big Bang, but this theory posits that a simpler ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of ...

New observations from the James Webb Space Telescope hint that the universe’s first stars might not have been ordinary fusion ...

A research team led by Rice University physicist Frank Geurts has successfully measured the temperature of quark-gluon plasma ...

For two decades, scientists believed the cosmological constant, known as λ (lambda), was positive. That meant the Universe ...

Pulsars could be helping scientists distinguish between gravitational waves caused by supermassive black hole collisions and ...

If recent discoveries that dark energy is evolving hold any water, our Universe will collapse under its own gravity on a ...

A new model suggests the universe may stop expanding and collapse in a reverse Big Bang, ending in a Big Crunch about 20 ...

The Big Bang Theory fans have reason to celebrate as the upcoming spin-off, Stuart Fails to Save the Universe, has officially begun production.

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

Astronomers have long thought the universe should look generally the same in every direction, but an anomaly in the radiation ...