Modern cosmology has precisely measured the universe's properties, yet dark matter and dark energy remain profound mysteries. While dark matter's gravitational effects are evident, its composition is ...

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

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

To destroy enough matter to explain the Hubble tension, black holes would have to merge at an unrealistic rate.

The universe is expanding, and that expansion is thought to be driven by unseen dark energy, but new measurements indicate ...

This new theory proposes that black holes could actually be tiny "bubbles". This involves the conversion of matter into dark ...

In a groundbreaking mission set to explore the very fabric of our universe, NASA’s Nancy Grace Roman Space Telescope is gearing up for its launch by May 2027. The telescope will offer a bold new ...

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

Then, by comparing that distance to how fast the galaxy is moving away, they get the expansion rate for that part of the universe. This gives a value of around 73 kilometers per second per megaparsec.

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.

A more precise distance to the Coma galaxy cluster was measured. This measurement increases the discrepancy between observed and predicted universe expansion rates. The discrepancy, called the ...