Question #15f2d

1 Answer
Mark C.
Nov 2, 2017

Gravity is the only force that has any significant effect on interstellar scales.

Explanation:

Weird, because gravity is impossibly, fantastically weak, compared to the other three fundamental forces but it is much longer range as it decreases in proportion to #1/r^2#

The electromagnetic force (the other long range one) is irrelevant too as we never get concentrations of charge equivalent to the concentrations of mass involved in stars/planets.

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