Centuries on, Newton's gravitational constant still can't be pinned down

Renowned Scientists Riddles - English Plus Podcast

13.1 Newton's Law of Universal Gravitation

Physics John Vagabond's Physics and Chemistry Blog

6.5 Newton's Universal Law of Gravitation

Books: Isaac Newton

Who Said Nobody Read Isaac Newton? - Nautilus

JETP Letters

What would happen if the gravitational constant was a million times larger? - Quora

Centuries on, Newton's gravitational constant still can't be pinned down. : r/sciencefiction

What Is a Particle?

Excerpt from But What If We're Wrong?

The curious case of the gravitational constant

Fisica de Newton by Juan Gonzalez - Issuu

gravitation class 9

What is the gravitational constant?