UNIVERSE
THE SUN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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very old star
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very young star
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red giant
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mid-sequence star
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Detailed explanation-1: -About 90 percent of the stars in the universe, including the sun, are main sequence stars. These stars can range from about a tenth of the mass of the sun to up to 200 times as massive.
Detailed explanation-2: -And each star is given a Roman numeral that indicates its size and its stage in life. The Sun is class G2V. That means it’s toward the hot end of class G, and that it’s on the “main sequence”-it’s in the prime of life, converting the hydrogen in its core to helium.
Detailed explanation-3: -A main sequence star is any star that has a hot, dense core which fuses hydrogen into helium to produce energy. Most stars in the galaxy are main sequence stars, including Alpha Centauri A, Tau Ceti and the Sun. Stars are formed by the gravitational collapse of gas and dust from the interstellar medium.