The Simple Molecule Behind Our Complex Universe

Molecular hydrogen (H2) played a crucial role in the formation of the universe by cooling gas clouds, allowing gravity to form stars and galaxies. Despite its abundance, H2 was only detected in space in 1970 using UV-sensitive technology. Today, H2 continues to influence star formation and the evolution of the universe, providing insights into where new stars are born and their characteristics.

What role did molecular hydrogen play in the early universe?

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How did the introduction of H2 molecules affect the temperature of the gas in the universe?

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In what ways does molecular hydrogen continue to impact the universe today?

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What was the significance of the discovery of H2 in 1970?

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What challenges did scientists face in detecting molecular hydrogen in space?

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Describe the process by which molecular hydrogen contributes to star formation.

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Explain how H2 influences the mass and type of stars that can form.

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