Three years ago, in the waters of the Mediterranean Sea, the passage of an "ultra-energetic" cosmic neutrino was observed—the ...

Three years ago, in the waters of the Mediterranean Sea, the passage of an "ultra-energetic" cosmic neutrino was observed — the most energetic ever ...

The universe is a place of unimaginable beauty and wonder—shimmering galaxies that dance across the cosmic stage, nebulae ...

Ripples in the fabric of space-time called gravitational waves may be the key to solving the Hubble tension — one of the biggest nagging problems in physics.

Astronomers are exploring a new way to measure the universe’s expansion rate using the gravitational-wave background detected ...

The Atacama Cosmology Telescope’s final data release confirms a major cosmic discrepancy and rules out many attempted solutions.

Cosmologist L Sriramkumar said gravitational waves could help scientists understand what happened just fractions of a second after the Big Bang ...

For years, cosmologists have argued over a simple question with an awkward answer: How fast is the universe expanding right ...

A proposed five-satellite Cosmic Positioning System could measure cosmic distances directly and help address discrepancies in the Hubble constant through solar system–scale triangulation.

A quiet shift in the numbers behind the universe’s growth is pushing scientists toward a bold possibility. Two of the cosmos’ ...

Astronomers have identified the most powerful and distant microwave laser, or maser, ever observed, originating from two ...