To an observer on Earth,dust in the interstellar medium will cause a star to appear
A) brighter and cooler than it really is.
B) brighter and hotter than it really is.
C) fainter and cooler than it really is.
D) fainter and hotter than it really is.
E) unchanged in brightness or apparent color.
Correct Answer:
Verified
Q2: Coronal gas radiates energy at
A) gamma-ray wavelengths.
B)
Q3: Radiation with a wavelength of 21-cm is
Q4: Absorption lines produced by the interstellar medium
Q5: The extinction of starlight due to the
Q6: The presence of forbidden lines in the
Q7: The local bubble
A) is a high temperature
Q8: Extinction by the interstellar medium dims starlight
Q10: Which of the following is not evidence
Q11: The air inside two balloons has the
Q39: Absorption lines due to interstellar gas
A) are
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