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Author Question: Why is the Hyades Cluster important for building up a catalog of the true luminosities of ... (Read 37 times)

yoooooman

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on: Jul 27, 2018
Why is the Hyades Cluster important for building up a catalog of the true luminosities of main-sequence stars?
 
  A) It is close enough to us that the distance to its stars can be found by stellar parallax.
  B) It's a cluster that has been photographed over many decades, so we know how the stars vary in brightness.
  C) It contains many Cepheid variable stars that can be used to determine its distance.
  D) It is an extremely bright star cluster.
  E) It is an old globular cluster whose age we can determine very accurately by measuring its main-sequence turn-off point.

Question 2

Galileo is credited with designing the first reflector telescope.
 
  Indicate whether the statement is true or false


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meganlapinski

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

A

Answer to Question 2

FALSE


yoooooman

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

xiazhe

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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