New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from the early cosmos.

Learn how a particle born in the sun’s core left a measurable flash of light two kilometers beneath Earth’s surface.

Quantum computing is entering a critical phase as researchers say scaling to millions of qubits is the biggest challenge and ...

From a particle smasher encircling the moon to an “impossible” laser, five scientists reveal the experiments they would run ...

Scientists finally caught solar neutrinos triggering a rare atomic transformation once thought nearly impossible to observe.

Despite soaring progress, scientists at AI’s largest gathering say key questions about how models work and how to measure ...

The exploration of quantum information challenges objective reality, positing the universe as a hologram is explored through ...

Four UC Nobel laureates on what they discovered here, why it matters, and why their world-changing work could only have ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

A new equation calculates how many fragments of each size will be produced when an object breaks. The principle could help ...

It’s a powerful technique, but small uncertainties at each step can add up, something critics argue may be behind the Hubble ...

A team of astronomers using a variety of ground and space-based telescopes including the W. M. Keck Observatory on Maunakea, ...