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Author Question: Binary (double) stars can be detected by a. being seen as two separate stars with a telescope. ... (Read 84 times)

ereecah

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on: Jul 27, 2018
Binary (double) stars can be detected by
 
  a. being seen as two separate stars with a telescope.
  b. one star traveling a wiggly proper-motion path across the sky.
  c. one star dimming abruptly as another passes in front of it.
  d. pairs of absorption lines seen in the spectrum of what appears to be one star.
  e. All of the other choices are correct.

Question 2

Which blurs our Earth-based view of celestial objects?
 
  a. the Sun
  b. the Moon
  c. Earth's atmosphere


kishoreddi

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Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

c


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ereecah

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Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


kishoreddi

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Reply #3 on: Jul 27, 2018
Great! Please up vote :D


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