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Stellar fusion is largely a function of mass and temperature. The smallest fusion star is generally considered to be about 15 jovian masses (15 times the size of Jupiter), or roughly 1/100th (0.001) times the mass of our sun. There are other things, such as companion stars or abundances of heavy elements that can affect this. What you are asking about is a field of study known as astrophysics. Quite fascinating.
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What creates the heat and light in a star?
Nuclear fusion, in the star's core.Nuclear fusion, in the star's core.Nuclear fusion, in the star's core.Nuclear fusion, in the star's core.
Which object forms by the contraction of a large sphere of gases causing the nuclear fusion of lighter elements into heavier elements?
A star forms by the contraction of a large sphere of gases. This contraction causes the nuclear fusion of lighter elements into heavier elements, releasing energy in the process.
Why all-stars have light?
Stars undergo nuclear fusion in their cores, and so generate energy; i.e., light and heat. No nuclear fusion, no energy generation, ergo not a star at all. Generating light and heat is how we can tell a very large planet from a star. If it isn't generating energy from nuclear fusion, then it isn't a star.
What is a star and how are they classified?
A star is a large, naturally occurring fusion reactor. Stars are classified by size, content, heat, and position within life cycle.
What is the last element to be formed in a very large star as it contracts from the red giant stage?
The last element to be formed in a very large star during its contraction from the red giant stage is iron. As the star's core becomes increasingly hot and dense, nuclear fusion processes create heavier elements up to iron. However, fusion of iron does not release energy, leading to a halt in the fusion process and eventually resulting in the star's collapse and supernova explosion.
What form of energy is does a star possess?
A star primarily possesses nuclear energy in the form of fusion reactions occurring in its core. This fusion process converts hydrogen into helium, releasing large amounts of energy in the form of radiation, heat, and light.
What forms a supernova?
The death of a large star (usually) or white dwarfs that get large enough to kick start carbon fusion. When a large star dies, it's fusion reaction core stops, and gravity takes ahold of the star. It begins to fall in on itself (transfering gavitational potential energy into kenetic energy). As the kenetic energy builds, heat builds up and causes the outer layers of the star to be blown away, leaving the massive core as either a nuetron star or a black hole.
What determines if n object in outer space is a Planet?
A planet is a celestial body which orbits a star, a planet must be large enough for it's own gravity to create it's spherical shape but not too large that it undergoes thermonuclear fusion (thermonuclear fusion is the process of star becoming a star due to it's size) there are many other factors but that was a basic answer.
Which nuclear fusion cycle is the next one to begin after helium fusion ends in a massive star?
The next nuclear fusion cycle after helium fusion in a massive star is carbon fusion. This process involves fusing helium nuclei to form carbon. Carbon fusion typically occurs in the core of a massive star after helium fusion is completed.
If star A has a core temperature T and star B has a core temperature 3t how does the rate of fusion of star A compare to the rate of fusion of star B?
The rate of nuclear fusion in a star is highly sensitive to its core temperature, typically following the relationship that fusion rates increase sharply with temperature. For a rough estimate, the rate of fusion can be proportional to (T^4) to (T^{10}), depending on the specific fusion process. If star B's core temperature is three times that of star A (3T), the fusion rate in star B would be significantly higher—potentially up to 81 to 1000 times greater than that of star A, depending on the exact exponent used in the temperature dependence. Thus, star B's fusion rate would be dramatically greater than star A’s.
How do stars do fusion?
A star has a large mass, and when the gases of the star undergo gravity compression, they heat up enough to initiate fusion. Firstly by combining four hydrogen to make one helium, thus releasing some spare energy. So the star heats up further, and fusion of other elements becomes possible.
What is a star called that begins as a large cloud of dust and gas?
A star that begins as a large cloud of dust and gas is called a protostar. It forms as gravity causes the dust and gas to clump together and initiate the process of nuclear fusion in its core.
