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 ...

A new study suggests that "little red dots" spied by the James Webb telescope could be the universe's short-lived first ...

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 using the James Webb Space Telescope have spotted the most distant “jellyfish galaxy” ever seen — a cosmic oddity streaming long, tentacle-like trails of gas and newborn stars as it speeds ...

The “horizon” he points to isn’t a doorway to the divine, other scientists say. Yet, modern physics has been trying to answer questions once left to religion.

Last year, our most detailed map of the universe yet suggested our understanding of dark energy has been wrong for decades. The shock result is reigniting the search for a better cosmic story ...

The galaxy NGC 941 was imaged by the Subaru Telescope at the summit of Maunakea, Hawai'i.

The researchers said that the "hydroxyl gigamaser" was generated by the merger of two galaxies some 8 billion light-years away.

NASA's Mike Fincke has identified himself as the astronaut whose medical condition prompted the space agency's first medical evacuation.

A Texas A&M lab built in the 1960s to study the universe has evolved into a world-leading facility testing electronics for ...

There’s a mysterious energy quietly influencing your brain. Could it explain where your consciousness originates?

A dense network of sensors is looking for the fleeting footprints of neutrinos, the most mysterious in the pantheon of known particles.