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Daddy667 Daddy667
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6 years ago
Galaxies contain 10 times as much dark matter as visible matter.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

Short-focal-length lenses and mirrors must be strongly curved.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 3

All elliptical galaxies are more massive than the largest spiral galaxies.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 4

Space-based telescopes carrying long-wavelength infrared detectors must carry coolant such as liquid helium to chill their optics to near absolute zero temperature.
 
  a. True
  b. False
  Indicate whether the statement is true or false
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shallonn__shallonn__
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Posts: 387
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6 years ago
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Daddy667 Author
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#2
6 years ago
I'm seriously surprised that you found the answers... What's your secret?!
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