Scientists think a new framework for quantum gravity could offer clues about a mysterious 5th fundamental force of nature.

We have 4 fundamental forces of nature. 'Quantum gravity' could help lead us to a mysterious 5th

Source: space
Source Link: https://www.space.com/astronomy/we-have-4-fundamental-forces-of-nature-quantum-gravity-could-help-lead-us-to-a-mysterious-5th