Discover cosmic strings: remnants of the Big Bang, potential clues to time travel, and key to unlocking the universe's ...

Studies using fluctuations in the cosmic microwave background — the afterglow of the Big Bang — suggest that for every megaparsec (Mpc; or 3.2 million light years) farther out one looks ...

Dark matter has puzzled physicists for nearly a century, remaining one of modern science's greatest mysteries. Although ...

The James Webb Space Telescope was designed and built to study the early universe, and hopefully revolutionary our ...

The origin of the universe is a story of extremes, marked by an explosive event so profound it birthed the very fabric of ...

It appears to account for about 27% of the mass–energy in the cosmos and is part of the Standard Model of cosmology. However, dark matter particles have never been observed directly. The Standard ...

In standard cosmology, dark matter and regular matter were both produced during the Big Bang. In the Dark Big Bang scenario with two Big Bangs, however, dark matter particles can be produced later ...

The Hubble tension is one of the most hotly debated discrepancies in all of astronomy. It centers around a number called the ...

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 ...