Searching for the graviton
Chapter 1
The puzzle of gravity
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Chapter 2
The quantum clash
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Chapter 3
Vibrating strings and extra dimensions
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Chapter 4
The ultimate cosmic detective work
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YOUR GOAL
Master of Searching for the graviton
Ch 1 · The puzzle of gravity
Fun Fact
Graviton speed: If gravitons exist, they must travel at exactly the speed of light, meaning a change in Earth's gravity would take 8 minutes to reach the Sun.
Glossary
graviton (noun)
A hypothetical elementary particle that mediates the force of gravitation in quantum field theory. Physicists propose this particle to reconcile quantum mechanics with Albert Einstein's 1915 theory of general relativity.
A hypothetical elementary particle that mediates the force of gravitation in quantum field theory. Physicists propose this particle to reconcile quantum mechanics with Albert Einstein's 1915 theory of general relativity.
Quiz
If the Sun suddenly vanished, how long would it take for Earth to feel the gravitational change?
Quiz
What is the name of the master framework of particle physics that currently excludes gravity?