Our sun, like all stars, is made mostly of hydrogen and helium. They are by far the most abundant elements, formed in the ...

New research suggests that the largest cosmic structure is even bigger and closer to Earth than we knew. It goes against ...

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding?

A new study in Monthly Notices of the Royal Astronomical Society by researchers including István Szapudi of the University of ...

Cosmologist Katie Mack breaks down what the latest findings about dark energy mean for our universe’s future. Either way, it ...

By mapping the brightest explosions in the universe, scientists may have uncovered a megastructure that defies our ...

Scientists may have finally found the universe’s missing matter - hidden in invisible hydrogen gas far beyond galaxies.

A new study suggests the universe may rotate -- just extremely slowly. The finding could help solve one of astronomy's biggest puzzles.

Astronomers have discovered a rare kind of galaxy that seems to be missing one of the universe’s most important ingredients: ...

These newer models stay stable and match up with what we see. The idea gains strength from an interesting observation: everything in the universe spins. Planets rotate. Stars rotate. Black holes ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe ... conflict between astronomical ...

A groundbreaking study,published in March 2025 on the preprint server arXiv, reveals that ultralight dark matter might have ...