Black holes are places where gravity is so powerful that nothing — not even light — can escape. Rather than being empty, black holes are chock full of matter that gets squeezed into a teensy space.

Albert Einstein stands next to Catholic priest Georges Lemaître in a black and white photo from 1900 In 1915, Albert Einstein published his theory of general relativity, which originally stated that ...

The concept of space is so intriguing that it fascinated our ancestors, and to this day, humans have been trying to figure out the big mysteries that it possesses. Even with all the technology that we ...

The particles that are in an atom: protons, neutrons and electrons The particles that are in protons and neutrons: quarks The four fundamental forces: gravity, electromagnetism, the strong force and ...

From the Catholic priest who pioneered it, to how we can (almost) see it, here are 5 fascinating facts about the Big Bang. When you purchase through links on our site, we may earn an affiliate ...