UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Stage 1 and stage 2
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stage 1, stage 2, stage 3, and stage 4
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stage 1 only
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stage 2 only
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Detailed explanation-1: -The first stage in the evolution of all stars involves the formation of a nebula. A nebula is a cloud of dust and gas which has been collected together by gravity in a process known as accretion. These clouds collect together to form a protostar. These clouds are so large that they condense down under their own weight.
Detailed explanation-2: -The planetary nebula phase is a final stage in a low-mass star’s life. During this phase, the star sheds its outer layers. This creates an expanding, glowing shell of very hot gas.
Detailed explanation-3: -Over time, the hydrogen gas in the nebula is pulled together by gravity and it begins to spin. As the gas spins faster, it heats up and becomes as a protostar. Eventually the temperature reaches 15, 000, 000 degrees and nuclear fusion occurs in the cloud’s core.
Detailed explanation-4: -Star formation in a cosmic nursery known as a nebula. Childhood as a protostar. Ignition into a main sequence star. Cooling off and expansion as a red giant.