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Author Question: All spiral galaxies have both a disk and spheroidal component to their stellar populations. ... (Read 138 times)

TFauchery

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on: Jul 27, 2018
All spiral galaxies have both a disk and spheroidal component to their stellar populations.
 
  Indicate whether the statement is true or false

Question 2

Our best stellar parallax measurements to date come from
 
  A) observations made by astronauts.
  B) radio interferometry.
  C) the Keck telescope.
  D) the Hipparcos satellite.
  E) ground based measurements taken six months apart.


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peter

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

TRUE

Answer to Question 2

D


TFauchery

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Reply #2 on: Jul 27, 2018
TY


peter

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Reply #3 on: Jul 27, 2018
You're welcome


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