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Author Question: Most of the galaxies in the Local Group are: A) big spirals like our Galaxy and M31. B) small ... (Read 72 times)

lbcchick

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on: Jul 27, 2018
Most of the galaxies in the Local Group are:
 
  A) big spirals like our Galaxy and M31.
  B) small spirals like M33 and the LMC.
  C) small irregulars like the Magellanic Clouds.
  D) active galaxies like Centaurus A.
  E) small ellipticals like the companions to M31 in Andromeda.

Question 2

This design involves only one optical surface, a concave mirror.
 
  A) prime focus reflector
  B) Newtonian reflector
  C) Cassegrain reflector
  D) Gregorian reflector
  E) refractor


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covalentbond

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

E

Answer to Question 2

A


lbcchick

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

patma1981

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Reply 3 on: Yesterday
Excellent

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