How are stars made? Where do the gases and other components come from in a vacuum?
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There are no perfect vacuums, there is even matter in between galaxies. There is just not a lot of it. Vacuum can mean any pressure below atmospheric pressure.
Stars are formed from [https://en.wikipedia.org/wiki/Molecular_cloud](https://en.wikipedia.org/wiki/Molecular_cloud) which is the remains of previous stars that have exploded. The material will start to clump together because of gravity after there are some disturbances of the cloud.
The matter in a Molecular cloud will be very low we talk about 100 to 300 molecules per cubic centimeter. This is a similarity in density to the moon’s atmosphere and we call that vacuum. But when you have volumes of cubic lightyears the total amount is huge an can from stars and planets.
We can observe it happening right now [https://en.wikipedia.org/wiki/Star_formation#/media/File:PIA18928-Protostar-HOPS383-20150323.jpg](https://en.wikipedia.org/wiki/Star_formation#/media/File:PIA18928-Protostar-HOPS383-20150323.jpg)
There are no perfect vacuums, there is even matter in between galaxies. There is just not a lot of it. Vacuum can mean any pressure below atmospheric pressure. I would say that galaxy formation is like stellar formation on a universe scale. If there is some variation in the density of the matter it starts to clump together in some places and with very little matter in between. Galaxy formation include more assumption than solar system formation because we can’t observe it
Stars are made when giant clouds of gas (mostly hydrogen) and dust in space start to accumulate and condense by gravity. As this ball of gas gets more massive and more condensed, the pressure and temperature in the center become so high that the hydrogen atoms start fusing into helium atoms. This is what a star is – a giant ball of gas undergoing nuclear fusion.
All of the hydrogen and most of the helium that stars are made of formed in the first few hundred thousand years after the big bang. Other heavier elements were made later in supernovas or other cosmological events like the collisions of neutron stars.
There are no perfect vacuums, there is even matter in between galaxies. There is just not a lot of it. Vacuum can mean any pressure below atmospheric pressure.
Stars are formed from [https://en.wikipedia.org/wiki/Molecular_cloud](https://en.wikipedia.org/wiki/Molecular_cloud) which is the remains of previous stars that have exploded. The material will start to clump together because of gravity after there are some disturbances of the cloud.
The matter in a Molecular cloud will be very low we talk about 100 to 300 molecules per cubic centimeter. This is a similarity in density to the moon’s atmosphere and we call that vacuum. But when you have volumes of cubic lightyears the total amount is huge an can from stars and planets.
We can observe it happening right now [https://en.wikipedia.org/wiki/Star_formation#/media/File:PIA18928-Protostar-HOPS383-20150323.jpg](https://en.wikipedia.org/wiki/Star_formation#/media/File:PIA18928-Protostar-HOPS383-20150323.jpg)
There are no perfect vacuums, there is even matter in between galaxies. There is just not a lot of it. Vacuum can mean any pressure below atmospheric pressure. I would say that galaxy formation is like stellar formation on a universe scale. If there is some variation in the density of the matter it starts to clump together in some places and with very little matter in between. Galaxy formation include more assumption than solar system formation because we can’t observe it
Stars are made when giant clouds of gas (mostly hydrogen) and dust in space start to accumulate and condense by gravity. As this ball of gas gets more massive and more condensed, the pressure and temperature in the center become so high that the hydrogen atoms start fusing into helium atoms. This is what a star is – a giant ball of gas undergoing nuclear fusion.
All of the hydrogen and most of the helium that stars are made of formed in the first few hundred thousand years after the big bang. Other heavier elements were made later in supernovas or other cosmological events like the collisions of neutron stars.
There are no perfect vacuums, there is even matter in between galaxies. There is just not a lot of it. Vacuum can mean any pressure below atmospheric pressure.
Stars are formed from [https://en.wikipedia.org/wiki/Molecular_cloud](https://en.wikipedia.org/wiki/Molecular_cloud) which is the remains of previous stars that have exploded. The material will start to clump together because of gravity after there are some disturbances of the cloud.
The matter in a Molecular cloud will be very low we talk about 100 to 300 molecules per cubic centimeter. This is a similarity in density to the moon’s atmosphere and we call that vacuum. But when you have volumes of cubic lightyears the total amount is huge an can from stars and planets.
We can observe it happening right now [https://en.wikipedia.org/wiki/Star_formation#/media/File:PIA18928-Protostar-HOPS383-20150323.jpg](https://en.wikipedia.org/wiki/Star_formation#/media/File:PIA18928-Protostar-HOPS383-20150323.jpg)
There are no perfect vacuums, there is even matter in between galaxies. There is just not a lot of it. Vacuum can mean any pressure below atmospheric pressure. I would say that galaxy formation is like stellar formation on a universe scale. If there is some variation in the density of the matter it starts to clump together in some places and with very little matter in between. Galaxy formation include more assumption than solar system formation because we can’t observe it
Stars are made when giant clouds of gas (mostly hydrogen) and dust in space start to accumulate and condense by gravity. As this ball of gas gets more massive and more condensed, the pressure and temperature in the center become so high that the hydrogen atoms start fusing into helium atoms. This is what a star is – a giant ball of gas undergoing nuclear fusion.
All of the hydrogen and most of the helium that stars are made of formed in the first few hundred thousand years after the big bang. Other heavier elements were made later in supernovas or other cosmological events like the collisions of neutron stars.
Interstellar space isn’t quite empty, it has about one atom of gas in each cubic centimeter (about ten atoms per cubic inch). Currents, ripples and shock waves from explosions in this interstellar gas make it more dense in places, and gravity can make it condense into a smaller volume, eventually creating a star.
Interstellar space isn’t quite empty, it has about one atom of gas in each cubic centimeter (about ten atoms per cubic inch). Currents, ripples and shock waves from explosions in this interstellar gas make it more dense in places, and gravity can make it condense into a smaller volume, eventually creating a star.
Interstellar space isn’t quite empty, it has about one atom of gas in each cubic centimeter (about ten atoms per cubic inch). Currents, ripples and shock waves from explosions in this interstellar gas make it more dense in places, and gravity can make it condense into a smaller volume, eventually creating a star.
Space isn’t a perfect vacuum, some areas have hydrogen which is a little denser than the rest of space known as nebulas these clouds get even denser to form stars https://youtu.be/w5sFxCo9Nyw basically it all comes down to gravity as the hydrogen gets denser the mass of hydrogen pulls even more atoms towards it until it stars to become a star. https://youtu.be/vVE0B6g9F_0
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