How do Stars form? + more videos | #aumsum #kids #science #education #children
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Stars are like huge balls of fire that emit a tremendous amount of heat and light. Stars don't form in a few seconds, minutes or hours. Star formation process is so slow that it can take millions of years.
A star begins its life inside vast molecular clouds of dust and gas. These molecular clouds are also known as nebulae or dark nebulae. They mostly contain hydrogen and helium molecules along with some other particles. Normally, these molecular clouds are cold and stable. However, a nearby supernova explosion or galactic collision may send a shockwave or tremendous amount of energy through a molecular cloud.
Now, in the molecular cloud, this energy causes a gravitational disturbance due to which it begins to collapse on itself under its own gravity, causing hydrogen and helium to clump together and thus, increasing the mass in the center of the cloud. This increase in mass, increases the gravitational pull, thus attracting even more molecules and particles from the surrounding. As more and more molecules and particles collapse or fall into the center of the cloud, the center begins to heat up. This heated center or heated core is known as a protostar.
A protostar continues to pull more molecules and gets hotter and hotter until the temperature and pressure reach to such an extent that hydrogen nuclei begin to fuse with one another producing helium and releasing heat, light and radiation. This process called nuclear fusion. When this happens, the inward force of gravity is exactly balanced by the outward force created by heat and radiation. These inward and outward forces maintain balance and thus, a star is born.
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Видео How do Stars form? + more videos | #aumsum #kids #science #education #children канала It's AumSum Time
Website: https://www.aumsum.com
Stars are like huge balls of fire that emit a tremendous amount of heat and light. Stars don't form in a few seconds, minutes or hours. Star formation process is so slow that it can take millions of years.
A star begins its life inside vast molecular clouds of dust and gas. These molecular clouds are also known as nebulae or dark nebulae. They mostly contain hydrogen and helium molecules along with some other particles. Normally, these molecular clouds are cold and stable. However, a nearby supernova explosion or galactic collision may send a shockwave or tremendous amount of energy through a molecular cloud.
Now, in the molecular cloud, this energy causes a gravitational disturbance due to which it begins to collapse on itself under its own gravity, causing hydrogen and helium to clump together and thus, increasing the mass in the center of the cloud. This increase in mass, increases the gravitational pull, thus attracting even more molecules and particles from the surrounding. As more and more molecules and particles collapse or fall into the center of the cloud, the center begins to heat up. This heated center or heated core is known as a protostar.
A protostar continues to pull more molecules and gets hotter and hotter until the temperature and pressure reach to such an extent that hydrogen nuclei begin to fuse with one another producing helium and releasing heat, light and radiation. This process called nuclear fusion. When this happens, the inward force of gravity is exactly balanced by the outward force created by heat and radiation. These inward and outward forces maintain balance and thus, a star is born.
Also, don't forget to subscribe to our YouTube channel.
Видео How do Stars form? + more videos | #aumsum #kids #science #education #children канала It's AumSum Time
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