You may think that time started 13.8 billion years ago at the birth of the universe, but physicists with alternative ...

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

Unexpected epochs of stillness that punctuate the cosmic timeline could offer a natural explanation for dark matter and many ...

Is it possible to understand the Universe without understanding the largest structures that reside in it? In principle, not ...

Early data of “little red dots,” or LRDs, from the James Webb Space Telescope (JWST) appeared to suggest the presence of galaxies too massive to exist in our modern cosmological models.

"The Hubble tension is now a Hubble crisis." The mystery of the Hubble tension has deepened with the startling finding that the Coma Cluster of galaxies is 38 million light-years closer than it should ...

A new study suggests that the explosive deaths of the universe's earliest stars created surprising quantities of water that may have sparked extraterrestrial life in the very first galaxies.

The Big Bang theory is our general picture of the ... A full evaluation of the ability of those galaxies to "break" cosmology would have to wait for a more precise measurement of their redshift ...

Credit: Deanne Fitzmaurice/National Geographic Image Collection/Alamy Our universe began with a bang—a big bang. The explosion stretched the very fabric of spacetime, sending superheated matter ...

Over the past decade, cosmology has been embroiled in a growing ... microwave static produced just 380,000 years after the Big Bang. Related: 'It could be profound': How astronomer Wendy Freedman ...