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Author Question: Cepheids and globular clusters are limited in their ability to measure the distance to galaxies ... (Read 91 times)

Jramos095

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on: Jul 27, 2018
Cepheids and globular clusters are limited in their ability to measure the distance to galaxies because they ____.
 
  a. are too rare
 b. are not bright enough to detect at large distances
 c. behave differently in other galaxies than they do in our own
  d. do not appear in dwarf galaxies
 e. are only found in elliptical galaxies

Question 2

What telescope instrument is used to counter the eastward rotation of Earth?
 
  a. Newtonian focus
  b. sidereal drive
 c. active optics
 d. Cassegrain focus
  e. floppy mirrors


cegalasso

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

b

Answer to Question 2

b


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Jramos095

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Reply #2 on: Jul 27, 2018
Thanks


cegalasso

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Reply #3 on: Jul 27, 2018
Welcome :)


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