Recent research has unveiled a troubling and persistent mystery at the heart of modern cosmology: the universe is expanding ...

The article explores several potential scenarios for the end of the universe, including heat death, the Big Rip, the Big ...

The universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous—and highly ...

Found less than a billion years after the Big Bang, these massive objects are upending astronomers’ timeline for how early galaxies formed.

Scientists have continued to chip away at some of the fundamental questions about how the universe and its multitudes of ...