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Author Question: How did the Hipparcos mission revolutionize our knowledge of stellar properties? What will be an ... (Read 54 times)

tiara099

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on: Jul 27, 2018
How did the Hipparcos mission revolutionize our knowledge of stellar properties?
 
  What will be an ideal response?

Question 2

The spherical distribution of the globular clusters in the Halo reminds us of the similar distribution of cometary nuclei in the ________ cloud.
 
  A) Hubble B) Kepler C) Kuiper D) Oort E) Shapley


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smrtceo

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

In space, it had far better resolution than Earth-based telescopes, so could find parallaxes and accurate distances out to 200 parsecs, for almost a million stars. These, in turn, give the luminosities of these stars, critical to helping us understand all other stellar properties as well.

Answer to Question 2

D


tiara099

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

raenoj

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Reply 3 on: Yesterday
Excellent

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