Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

"The new model can account for both structure formation and stability, and the key observational properties of the expansion of the universe at large." ...

For the first time in history, we can explore the universe through a rich blend of senses—seeing, touching, and hearing astronomical data—in ways that deepen our understanding of space. While ...

The May issue of Scientific American takes you on a deep-sea mining mission, explores dark comets and examines an invisible threat to the food we eat ...