What is gravity without mass ... solving a simplified version of the Einstein field equations that allows for a finite gravitation force in the absence of any detectable mass.

In the vast universe, galaxies rotate in ways that don’t make sense if only visible matter is considered. For almost a ...

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 ...