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

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

For the first time in history, we can explore the universe through a rich blend of senses—seeing, touching, and hearing ...

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

The universe doesn't come with an instruction manual—but if it did, University of Missouri Assistant Professor Charles Steinhardt suspects a few pages are missing. Either the universe has been playing ...

The universe's largest structure, the Hercules-Corona Borealis Great Wall, was already a challenge to explain with models of the universe ... core collapse of massive stars that leads to a ...

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

The rotating model, which does not break any known law of physics, suggests the universe could spin around once every 500 billion years. This would be far too slowly to detect easily, but enough to ...

Szapudi and their colleagues’ new model indicates the universe finishes a single rotation ... of cosmic spinning to search for among the stars. The PopSci team has tested hundreds of products ...

Current models say the universe expands evenly in all directions ... One method looks at distant exploding stars or supernovae, to measure the distances to galaxies, and gives an expansion ...

In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the ...