Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...

The universe is vast, a size beyond what many of our imaginations can deal with, but modern technology helps shine a light.

Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

A new perspective on the universe could emerge if superluminal observers, those who theoretically move faster than light, ...

Quasars are among the oldest, brightest objects in the universe. Formed from active galactic nuclei ... toward us—a cone in ...

Across cosmic history, powerful forces have acted on matter, reshaping the universe into an increasingly complex web of ...

Although they don't impact the surface directly, historical evidence and simulations suggest airbursts can pack a punch.

New measurements show that the expansion rate of the universe is faster than can be explained by our current understanding of ...

This is called the “heat death” of the Universe, but you can think of it instead as the death of heat. There will be no more differences in temperature anywhere, which means thermodynamics shuts down, ...

New research confirms the Universe is expanding faster than theoretical models predict, intensifying the Hubble tension.

The Universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous -- and highly debated -- results had shown: The Universe is expanding faster than predicted by ...