The force of gravity is the strongest of the four known force fields. true false

The force of gravity is the strongest of the four known force fields is true.

True

Explanation

When considering forces in space, the gravitational force is strong as gravity has long-range and negative mass does not exist.

Here other forces like nuclear force and electromagnetic force do not come into effect.

Therefore such forces in astronomical level are negligible.

Gravity is weakest at atomic scales where electromagnetic and nuclear force come into play.

Therefore, gravity can be neglected for calculations on atomic levels.  

3. dark matter

empty space could also be a simple vacuum