Gravity

This site tells the story of the history of the universe. Click Earlier and Later to follow the story.
Note: Many facts have been simplified to make them easier to understand.
Our new free weekly podcast Time Crystal tells this story as sci-fi fantasy

The Universe grew bigger and cooler still. The atoms moved slower and began to feel a weak force called gravity pulling them towards each other. Gravity is a weak force of attraction between every particle of matter in the Universe and every other particle. It is the force which holds us on to the Earth. Without it none of this story would have been possible.

The particles thought to carry the gravitational field and give rise to the force of gravity are called gravitons. They have never been detected.