Molecular Hydrogen Is Not Very Useful for Mapping Molecular Clouds

question 93

Multiple Choice

Molecular hydrogen is not very useful for mapping molecular clouds because:

• A)molecular hydrogen does not occur in most molecular clouds.
• B)molecular hydrogen puts out radiation similar to most stars.
• C)molecular hydrogen and atomic hydrogen cannot be distinguished in telescopes.
• D)radiation from carbon monoxide overwhelms radiation from molecular hydrogen.
• E)molecular hydrogen is essentially invisible in the radio portion of the spectrum.

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