Astronomers once thought the universe's first stars (made of hydrogen and helium) were nearly all giants, hundreds to ...

Information could become the fifth state of matter alongside gas, plasma, liquid, and solid states. A scientist has proposed ...

Scientists have found that the universe exists because it began with a slight imbalance between matter and antimatter.

That cosmologists cannot agree on one of the most elementary facts about the universe is striking enough. But that uncertainty produces others, too: it makes it impossible to calculate an exact age ...

Quirks & Quarks is having its 50th anniversary this fall. Bob McDonald shares his appreciation for the people behind the ...

The first chemical reactions in the wake of the Big Bang have been recreated for the first time in conditions similar to those in the baby Universe.

Astronomers have discovered the most monstrous supermassive black hole ever. At 36 billion times more mass than our sun, it’s ...

For decades scientists believed the universe was built on ordinary matter, dark matter and dark energy. These unseen forces ...

A backward, mirror universe could explain the existence of dark matter. If an anti-universe exists, it would run backward in ...