The only place that's likely to happen is at the very center of our galaxy. And, for a while, there was an excess of ...

For nearly a century, scientists around the world have been searching for dark matter—an invisible substance believed to make up about 80% of the universe's mass and needed to explain a variety of ...

The explosion of a star, called a supernova, is an immensely violent event. It usually involves a star more than eight times ...