Astronomers at the University of North Carolina at Chapel Hill have helped uncover new clues about the longest-lasting cosmic ...

The vast emptiness of space is growing emptier one star at a time. That's because 80 billion lightyears from Earth, three cosmic beasts are devouring stars ten times the size of the sun. The ...

On October 30, 1961, the Soviet Union detonated the Tsar Bomba over Novaya Zemlya. At 50 megatons, it was the most powerful human-made explosion in history—so massive it shattered windows over 500 ...

What followed after the bomber released its deadly cargo changed nuclear history forever. From a fireball that nearly touched ...