This question, deceptively simple and imbued with as much philosophy as science, has puzzled all manner of people. But few ...

I've long been fascinated by the fundamental mystery of our universe's origin. In my work, I explore an alternative to the ...

Greek astronomer Dimitrios Psaltis was instrumental in the gigantic effort to take mankind's first-ever image of a black hole ...

The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

Science uses careful, organized observations and tests to construct theories that are recorded, passed on to others and built ...