How Do Fragile Structures Like Acetaldehyde (CH₃CHO) Molecules Survive in the Harsh

question 2

Multiple Choice

How do fragile structures like acetaldehyde (CH₃CHO) molecules survive in the harsh environment of interstellar space? Why are they not destroyed by high-energy radiation from stars?

• A) such molecules are only found in the shadows of the stars
• B) such molecules are found only on planets or comets, not in space
• C) such molecules are protected by the presence of hot interstellar hydrogen
• D) such molecules are found only in dense clouds that have a lot of dust; the dust keeps the radiation from hot stars from reaching the molecules
• E) such molecules are found only where very cool stars are present, that's why they are so very rare in the Galaxy
• Section 20.3: Interstellar Dust

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