The clearest and most precise images yet of the universe in its infancy—the earliest cosmic time accessible to humans—have ...

The explosion released elements heavier than iron—like gold and platinum—through a process known as rapid neutron capture ...

Did Sunita Williams age faster in space? NASA astronaut's sunken chin in recent photos sparks concern over the effects of prolonged microgravity on the human body.

One of the most closely watched astronaut missions came to a dramatic close this week as NASA’s Suni Williams and Butch Wilmore made their triumphant return.

How NASA astronaut maintained her health - a look at her fitness routine that included resistance training, cardio, and yoga ...

Astronomers have made the surprising discovery of oxygen and elements like heavy metals in the most distant known galaxy. The ...