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That is still a mystery. Obviously, they are held together by gravitation. Each star attracts each other star, and you might say that the combined force of these attractions keeps the galaxy together. But the known matter in our galaxy - and in other galaxies - isn't strong enough to account for the fast rotation a galaxy has. There must be about 5-10 times more matter, compared with known matter, in something invisible - commonly known as "dark matter". This mysterious dark matter can be noticed through its gravitational attraction, but it can't be seen directly.
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∙ 14y ago
Wiki User
∙ 15y agoThe stars are not "held" fixed in the sky, but are so far away that their movement is imperceptible. The whole of the universe is a moving, expanding, seemingly infinite array of stars, galaxies, and huge groups of galaxies, in a cosmic expanse of which Earth is only a tiny part. (But, as far as we know to date, we are the only consciousnesses here to witness it.)
Wiki User
∙ 12y agoStars are held together by gravity.
A star is basically a body that produces energy at the same rate as it contains it.
Wiki User
∙ 16y agoThe forces of gravity of a star helps to hold it together.
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∙ 9y agoThe mass of a star holds it together. The gravity of the mass atomically draws it toward the middle of the star.
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∙ 13y agoYes. Actually, the gases in the stars are considered to be in a "fourth state of matter", called plasma. The difference is that in a plasma, many of the atoms are ionized.
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∙ 15y agoInsufficient momentum to escape.
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∙ 12y agoGravity Caused by nuclear fusion
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∙ 14y agogravity
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∙ 12y agoGravity.
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What fundamental forces pulled together hot dense areas of matter in the early Universe to begin the process of star formation?
gravity
What would happen to the Sun if gravity exceeded pressure at some point?
The sun would collapse and increase in density. This would increase the rate of nuclear fusion which would try to hold the star apart even harder. At some point other forces like the electron degeneracy pressure would come into play to hold the star apart. If all those forces failed though the sun would become a black hole.
What forces are opposing one another throughout the life of a star how do they influence the various stages in life cycle of a star?
The two opposing forces are gravity, pulling the star in and the outward force from the ongoing nuclear fusion reactions. As the star approaches the end of it's life, changes in the reactions occur, which cause the forces to balance out in different ways, changing the size of the star.
Do hydrogen make stars?
technically speaking, stars are first made of Hydrogen. The moment the star comes to life, it starts fusing together Hydrogen atoms, forming helium. when a star is nearing the end of its life, it starts fusing together helium and keeps on fusing until there is nothing more to fuse. then, the star dies.
Is there a balance between pressure and gravity in main sequence stars?
Gravity is constantly pulling the matter of a star together, while the nuclear fission reaction that makes the star shine and put off heat is trying to make it explode. The two are very precariously balanced.
What force make a star?
All of the forces act to make a star. Gravity is the main force, which pulls everything together, and the other forces ignite the star.
What are the main forces that make up a star?
Objects are not made of forces. A star is made of hydrogen, helium and, later in its life, heavier elements.
What was the star of david made out of?
two trangles put together
What is star made of?
star is made up of hot gases star is made up up of hot gases
What fundamental forces pulled together hot dense areas of matter in the early Universe to begin the process of star formation?
gravity
What are the release dates for Star and the Forces of Evil - 2014?
Star and the Forces of Evil - 2014 was released on: USA: 2014
What is made up of billions of stars held together by gravitational attraction?
The star groups are galaxies, or possibly globular star clusters.
What force forms a star?
The mass forces the star to form
Something sweet to say when you want to get back together with your boyfriend?
I've always thought you.... or If I could hold a star for every time you made me smile, I would have the whole night sky in my hands. Sorry if this didn't help
Why is there star on barn?
The star on the side of a barn is a hexmark. It is meant to ward off evil magic and witches/warlocks who work with evil forces. There are those who hold a strong belief in the matters and symbols. Whether of not you believe, there are those who do.
How many nebulas are needed to create a star?
One, the gas (hydrogen) get pulled together by gravity, getting denser, and finally, a star is made.
What the difference the forces in a star?
The fundamental forces in a star are the same as they are elsewhere in the universe. Weak nuclear Strong nuclear Gravitational Electromagnetic.
