For more than two decades, the standard model of cosmology has stood as a reliable guide to the universe. Known as Lambda Cold Dark Matter, or ΛCDM, it weaves together dark energy, dark matter, and ...

Dark energy, the mysterious force driving the accelerated expansion of the universe, has puzzled scientists since its ...

That cosmologists cannot agree on one of the most elementary facts about the universe is striking enough. But that ...

To astronomers in the 1990s, these three facts were self-evident: The universe is expanding; all the matter in the universe ...

Researchers are using supercomputer simulations grounded in Einstein’s relativity to test scenarios about what may have ...

UC Santa Cruz physicist Stefano Profumo has put forward two imaginative but scientifically grounded theories that may help ...

The new study calculated the current universe expansion rate, or Hubble constant, to be 73.8 kilometers per second per megaparsec, a number significantly higher than the 67.5 value predicted by ...

A University of Queensland researcher has developed a new mathematical model to explain the evolution of the universe which, ...

However, the observable universe extends farther than 13.8 billion light-years in every direction because, for all the time space has existed, it’s also been expanding.