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25 November, 19:44

What slows down the contraction of a star-forming cloud when it makes a protostar? (a) production of fusion energy (b) magnetic fields (c) trapping of thermal energy inside the protostar?

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  1. 25 November, 19:48
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    The correct answer for this question is the option c: (c) Trapping of thermal energy inside the protostar.

    When astronomers say "protostar" they refer to the early stage in the formation of a star. This celestial objects are very difficult to detect, because they are balls of gas and dust.
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