Everybody in the universe pulls every other body with a force that is directly proportional to their mass-produced and inversely proportional to the distance square between them.
The Gravitational force formula is given by
\begin{array}{l}F=\frac{Gm_{1}m_{2}}{r^{2}}\end{array}
Where,
G is universal gravitational constant,
m1 and m2 are mass of bodies
r is the radius between the two masses