No an nebula is held together by the balance of the inward force of gravity and outward pressure.
Gravity.
While the star can produce energy, that keeps the star in balance - it keeps the star from collapsing. By the way, another outward force is the gas pressure, but that, by itself, is not enough to counteract the force of gravity in the case of a star.
The answer is simple: gravity.
The energy released by fusion in the core of a star produces an outward pressured force that counteracts gravity. When fusion stops, that force goes away and gravity takes hold, causing the core to collapse.
GRAVITY!!!!
The following are the four universal forces: gravity, weak force, electromagnetic force, strong force. Out of these four, the strong force plays the largest part in holding atoms together.
Gravity..
Gravity.
A solar nebula is a place where new stars are formed. Stars are "born" here when giant dust and gas clouds are pulled together under the force of gravity.
If the force of gravity crushing a star in weren't balanced, it would collapse. The outward-pushing force counteracting gravity is the energy produced in nuclear fusion, when the heat and pressure inside of stars smashes atoms together.
The nebula will explode.
Gravity and heat.
gravity
A protostar forms when gravity pulls the dust and gases in a nebula together.
gravity. (gravitational force.)
Not sure what you mean by "change gravity"; a nebula has mass, therefore it exerts a gravitational force.
Gravitation.Gravitation.Gravitation.Gravitation.
"While the star can produce energy, that keeps the star in balance - it keeps the star from collapsing. By the way, another outward force is the gas pressure, but that, by itself, is not enough to counteract the force of gravity in the case of a star."