Multiple Choice
How can we see through the interstellar medium?
A) by observing at wavelengths (high-energy X-rays and long wavelength radio waves) that are not absorbed by interstellar dust
B) by observing only the brightest stars in the galaxy
C) by observing with only the biggest telescopes
D) by observing with telescopes above the Earth's atmosphere, such as the Hubble Space Telescope
E) We cannot see through the interstellar medium.
Correct Answer:

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Correct Answer:
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