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stars undergo nuclear fusion, that is to say that the nuclei of 2 (or more) atoms literally combine. in stars it's hydrogen, and by combine i dont mean a chemical reaction. i mean that you take one proton, add another proton, and out comes a nucleus with 2 protons. so take 2 hydrogens (both 1 proton each) and use nuclear fusion to turn it into the atomic element with 2 protons known as helium
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The onset of which event marks the change of a protostar into a star?
the nuclear fusion of hydrogen into helium
Is the sun a protostar?
No, the sun is not a protostar. It is a mature star that is in the main sequence phase of its life cycle, where it fuses hydrogen into helium in its core. A protostar is a young star that is still in the process of accumulating mass and contracting before it begins hydrogen fusion in its core.
When does a protostar become a star?
The basic idea is that the protostar contracts, under the influence of gravity, until it gets dense and hot enough to undergo nuclear fusion. You can find more details at the Wikipedia article "Protostar".
A protostar becomes a star when?
A protostar becomes a star when nuclear fusion begins in its core, converting hydrogen into helium and releasing energy. This process generates enough heat and pressure to balance the force of gravity, causing the protostar to shine brightly as a star.
What is a protostar's energy source?
A protostar's energy source primarily comes from gravitational contraction. As the gas and dust in a molecular cloud collapse under gravity, they form a dense core that heats up due to the increasing pressure. This process generates thermal energy, which raises the temperature of the protostar. Eventually, when the core temperature becomes high enough, nuclear fusion of hydrogen into helium begins, marking the transition to a main sequence star.
The onset of which event marks the change of a protostar into a star-?
The nuclear fusion of hydrogen into helium
The onset of which event marks the change of a protostar into a star?
the nuclear fusion of hydrogen into helium
What are all the gases in a protostar?
Mostly hydrogen (with some helium, deuterium, and lithium). Other elements (all other elements) are added as the date of formation of the protostar comes closer to the current date.
Is the sun a protostar?
No, the sun is not a protostar. It is a mature star that is in the main sequence phase of its life cycle, where it fuses hydrogen into helium in its core. A protostar is a young star that is still in the process of accumulating mass and contracting before it begins hydrogen fusion in its core.
When does a protostar become a star?
The basic idea is that the protostar contracts, under the influence of gravity, until it gets dense and hot enough to undergo nuclear fusion. You can find more details at the Wikipedia article "Protostar".
A protostar becomes a star when?
A protostar becomes a star when nuclear fusion begins in its core, converting hydrogen into helium and releasing energy. This process generates enough heat and pressure to balance the force of gravity, causing the protostar to shine brightly as a star.
What are the symbols for hydrogen and helium?
The symbol for hydrogen is H, and the symbol for helium is He.
What are the two main elements found in the stars?
Hydrogen and helium
Hydrogen and helium formulas?
Hydrogen is H2. Helium is He.
What is a star called when it glows but has not begun to fuse hydrogen?
Protostar
When does pro-to star become a star?
I actually thought that would be when the star starts fusing hydrogen into helium... But apparently there are other stages between those two.According to Wikipedia, "[The protostar phase] ends when the protostar blows back the infalling gas and is revealed as an optically visible pre-main-sequence star, which later contracts to become a main sequence star."Pre-main sequence means the star is not yet on the main sequence; and that, in turn, basically means that it is not yet fusing hydrogen into helium.
When are hydrogen and helium form?
Hydrogen and helium are formed in Sun.
