UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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it begins to spin
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it will not spin
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none of the above
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all of the above
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Detailed explanation-1: -When the hydrogen in the centre of a star runs out, the star begins to use hydrogen further out from its core. This causes to star to grow. Its radius can reach up to 400 times its original size. As the star expands it also cools. The change in temperature causes the star to glow redder.
Detailed explanation-2: -All stars will expand, cool and change colour to become a red giant. What happens next depends on how massive the star is. A smaller star, like the Sun, will gradually cool down and stop glowing. During these changes it will go through the planetary nebula phase, and white dwarf phase.
Detailed explanation-3: -A low mass star becomes a white dwarf Low mass stars (0.08-5 SM during main sequence) will go the planetary nebula route. A low mass core (, 1.4 SM) shrinks to white dwarf. Electrons prevent further collapse. The size of the white dwarf is close to that of earth, and the outer layers are planetary nebula.