This is a fairly challenging question to address, since there are so many different types of stars in this universe, and because weight and mass do not mean the same thing.
In our own galaxy, the Milky Way, roughly 80% of the stars are red dwarfs. Since red dwarfs typically have about 1/5 the mass of our sun, and since the sun's mass is roughly 2,000,000,000,000,000,000,000,000,000,000 (2 E+30) kilograms, then about 80% of stars (red dwarfs) in our galaxy have roughly 416,000,000,000,000,032,000,000,000,000 (4.16 E+29) kilograms of mass, which works out to about 917,123,010,689,090,745,280,000,000,000 (9.17 E+29) pounds.
Again, mass and weight are not really the same thing. Mass is the measure of the amount of matter that makes up an object, and weight is the measure of gravitational acceleration that mass undergoes, in a given inertial frame of reference - for example, close to the earth's surface.
This will probably confuse things, but for your question to really make any sense, it needs to be recast as: "What is the weight of a star on the surface of earth?" Meaning, if it were possible to put a typical star on a scale on the surface of the earth, what would that star weigh?
Now, among galaxies in the observable universe, our Milky Way is fairly typical (it is a "barred spiral"), so it is probably safe to say that roughly 80% of the stars in most galaxies throughout the universe are red dwarfs.
So, to answer your question, in an extremely broad sense, the weight of a star *on earth* would be about 416,000,000,000,000,032,000,000,000,000 kilograms, or about 917,123,010,689,090,745,280,000,000,000 pounds.
Only the most massive stars play a crucial role in enriching the galaxy with heavy elements because they undergo rapid nuclear fusion and have shorter lifespans, leading to explosive events like supernovae. During these explosions, they synthesize and disperse heavy elements, such as iron and gold, into the interstellar medium. In contrast, lower-mass stars do produce heavy elements, but their contributions are less significant and occur over much longer timescales. Thus, the violent death of massive stars is key to the rapid recycling of heavy elements in the galaxy.
Heavy elements typically form in the cores of massive stars during nucleosynthesis processes, which require high temperatures and pressures found in larger stellar environments. Smaller stars like brown and white dwarfs lack sufficient mass to reach the necessary conditions for fusion of heavy elements; they primarily burn hydrogen and helium. As a result, they do not undergo the complex fusion processes that create heavier elements, leading to a predominance of lighter elements in these smaller stars. When massive stars end their life cycles, they explode as supernovae, dispersing heavy elements into the universe, while dwarfs remain largely composed of lighter elements.
The first generation of stars is believed to have formed from pristine gas with fewer heavy elements compared to stars today, affecting their composition and behavior. Additionally, the first stars likely formed in different environments with higher densities and temperatures, influencing their size, mass, and lifespan. These differences may have led to the unique characteristics of the first generation stars compared to those born in the present universe.
Giant stars are massive, luminous stars that have reached the later stages of their life cycle. They are larger and hotter than main sequence stars, like our Sun, and are often in the process of expanding and cooling as they exhaust their nuclear fuel. Giant stars are crucial for the creation of heavy elements in the universe through nucleosynthesis processes.
Dead stars, such as white dwarfs, neutron stars, and black holes, play a crucial role in understanding the lifecycle of stars and the universe. They contribute to the formation of new stars by enriching the interstellar medium with heavy elements. They also serve as laboratories for testing theories of physics under extreme conditions. Additionally, the remnants of dead stars can provide insights into the history and evolution of our galaxy.
Heavy elements were formed in stars, and blown out into space in supernova explosions.
Heavy stars produce heavier elements through nuclear fusion in their cores. As heavy stars age and undergo supernova explosions, they release these heavier elements into the surrounding space, enriching it with elements beyond hydrogen and helium. Lighter stars are not massive enough to produce heavy elements through fusion.
Heavy stars usaly go
Generally, the more massive a star is, the more luminous they are. The most luminous stars appear blue.
If there are lots of heavy clouds, they will block the faint light from the stars so taht you don't see them.
Heavy stars go supernova at the end of their lives.
Mostly heavy elements are created inside stars and then spread when they go supernova and recondense into new stars and planets.
Astronomers believe the globular clusters are made of old stars because of the lack of heavy elements. The heavy element is very abundant in stars like our sun, so the theory is the globular cluster must be older and formed in a more primitive universe.
You will need to expand on that question. If you mean how many stars are born in a galaxy then it would be inaccurate for me to give an answer because a galaxy is a vast, heavy grouping of stars, supported by gravity. There is no minimum or maximum amount of stars allowed and so a galaxy could vary quite vastly in the number of stars it contains.
In the interior of certain massive stars.
Population 1 stars are luminous. They include the Sun and are hot and young stars. These types are usually found in spiral galaxies. Population 2 stars are found in nucleuses of galaxies and globular galaxies. These stars are older and usually cooler than the population 1 ones.
yes its awesome. their are 7 different endings, and people rated the video game "heavy rain" 9 out of 10 stars. and you make your endings yourself