GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Red Giant
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Protostar
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Main Sequence Star
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Black Dwarf
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Detailed explanation-1: -When the gas particles in the molecular cloud run into each other, heat energy is produced. This results in the formation of a warm clump of molecules referred to as the Protostar. The creation of Protostars can be seen through infrared vision as the Protostars are warmer than other materials in the molecular cloud.
Detailed explanation-2: -A protostar is a very young star that is still gathering mass from its parent molecular cloud. The protostellar phase is the earliest one in the process of stellar evolution. For a low-mass star (i.e. that of the Sun or lower), it lasts about 500, 000 years.
Detailed explanation-3: -These molecular clouds of gas are also called stellar nurseries as they birth stars. Protostars become pre-main-sequence stars or T Tauri stars once most of the surrounding molecular gas is depleted through gravitational contraction.