Is gravity a force? The answer to that simple question is remarkably complicated and depends crucially on the theoretical framework in which the question is asked and answered. In this video, Fermilab’s Dr. Don Lincoln takes on this surprisingly tricky question.

Quantum gravity:
   • Quantum Gravity  

Loop quantum gravity:
   • Loop Quantum Gravity  

Superstrings:
   • Superstrings  

Fermilab physics 101:
https://www.fnal.gov/pub/science/part...

Fermilab home page:
https://fnal.gov