k{g^{- 2}}\). Overall this equation is simpler than it looks as long as you ensure that: distance is given between centres units are all in metres and kilograms The force of gravity exists between ...

His idea: gravity can exist without any mass ... Newtonian theory and in general relativity. These equations link mass with the gravitational force it creates. Lieu focused on what’s known ...

“We proved that the Einstein field equation from general relativity ... So, instead of thinking of gravity as an invisible ...