“An interstellar cloud of gas will remain in hydrostatic equilibrium as long as the kinetic energy of the gas pressure is in balance with the potential energy o

“An interstellar cloud of gas will remain in hydrostatic equilibrium as long as the kinetic energy of the gas pressure is in balance with the potential energy of the internal gravitational force.“ https://en.wikipedia.org/wiki/Star_formation#Cloud_collapse https://en.wikipedia.org/wiki/Star_formation#Cloud_collapse