The Image of Our Galaxy in Radio Emission from Carbon

question 1

Multiple Choice

The image of our galaxy in radio emission from carbon monoxide maps the distribution of molecular clouds. Which of the following would give a similar picture of our galaxy?

• A)visible light, showing the edges of supernova bubbles
• B)visible light, which is closest to how the night sky appears from Earth
• C)X- rays from hot gas bubbles in the disk
• D)21- cm- line radio emission from atomic hydrogen
• E)infrared emission from interstellar dust grains

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