When hundreds of eerily perfect circles were discovered on the bottom of the Mediterranean Sea, theories abounded about what they could mean. Four years of underwater research revealed a lost world.

Meanwhile, the COSI Planetarium treats visitors to a presentation on the planets, stars and universe, while the National Geographic Giant Screen Theater shows films on the national parks ...

Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...

At Argonne National Laboratory, scientists have leveraged the Frontier supercomputer to create an unprecedented simulation of ...

The universe really seems to be expanding fast. Too fast, even. A new measurement confirms what previous—and highly ...

New research confirms the Universe is expanding faster than theoretical models predict, intensifying the Hubble tension.

For humans, the most important star in the universe is our Sun. The second-most important star is nestled inside the Andromeda galaxy. Don't go looking for it -- the flickering star is 2.2 million ...

Astronomers have discovered an extraordinary new giant radio galaxy with plasma jets 32 times the size of our Milky Way.

Two stars in Wolf-Rayet 140 collide, forming carbon-rich dust. Webb captured 17 expanding dust shells, revealing ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...