Which among the following two gases contribute to begin the formation of stars?
Q. Which among the following two gases contribute to begin the formation of stars?
Answer: Hydrogen & Helium
Notes: The formation of the stars is explained by Big bang theory. The big bang produced hydrogen and helium. Most of the heavier elements are created only by the thermonuclear fusion reactions in stars, so they would not have been present before the first stars had formed.

 

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