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Home Q & A Board Science-Related Homework Help Physics Astronomy
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qpitt19777 qpitt19777
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6 years ago
The look-back time to the Sun is _____.
 
  A) 1.3 minutes
  B) 8 minutes
  C) 16.2 minutes
  D) 20 minutes

Question 2

Spiral galaxies usually contain:
 
  A) M stars.
  B) white dwarf stars.
  C) young stars.
  D) red giant stars.

Question 3

Which of the following is true of quasars?
 
  A) They manifest very small redshifts.
  B) Their spectra are similar to stellar spectra.
  C) They represent the structure of galaxies as they are in the present time.
  D) Their luminosity is 10 to 1000 times the luminosity of a large galaxy.

Question 4

The calibration used to build a distance scale reaching from the size of Earth to the most distant visible galaxies is referred to as the__________.
 
  A) distance grid
  B) distance model
  C) distance candle
  D) distance ladder
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slpconnerslpconner
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6 years ago
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qpitt19777 Author
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#2
6 years ago
I'd be lost without this website, honestly
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