Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree ...

By Will Dunham WASHINGTON, Feb 28 (Reuters) - The largest stars in the universe live the life of a rock star - they are born ...

New research suggests researchers should start by comparing parameters other than time.

Astronomers have spotted what may be one of the universe’s earliest barred spiral galaxies — a striking cosmic structure forming just 2 billion years after the Big Bang. The galaxy, COSMOS-74706, ...

Astronomers say one of the universe’s largest stars has dramatically changed since 2014, possibly entering a rare final phase that could end in a spectacular supernova explosion.

A new computational simulation of the early universe has revealed a fundamental, unbreakable geometric limit to the fabric of spacetime, dubbed the "Metric Wall." Discovered by independent physics ...

One of the most striking parallels lies in the idea that reality is not independent of the observer. Classical physics assumed an objective universe existing regardless of who observed it. Quantum ...

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

Scientists identify exoplanet candidate HD 137010 b, a possible Earth-size world orbiting a Sun-like star 146 light-years away ...

Scientists discovered a distant jellyfish galaxy with star-forming "tails" stretching back 8.5 billion years.

After three seasons and 36 episodes, The Orville has gone way beyond being a mere parody. Here are the sci-fi show's 10 ...

SES AI earns a Strong Buy rating for its pivot from battery manufacturing to a high-margin SaaS and IP-driven model in the EV ...