What was the first evidence that quasars were different from ...

[Sportsfan2111]

What was the first evidence that quasars were different from astronomical objects before they were observed in visual wavelengths?
 
  a. The first quasars were seen to have fuzz.
  b. Quasars emitted radio energy like active galaxies, but appeared to be point sources in radio wavelengths.
  c. Quasars showed significant gravitational lens effects.
  d. The spectra of quasars looked like that of an M dwarf.
  e. The larger redshifts originally indicated that they were orbiting the center of the Milky Way.

Question 2

Helium flash occurs
 
  a. because helium is very explosive and cannot be controlled when the nuclear reactions occur.
  b. because degenerate gas does not allow the core to expand as it heats up.
  c. in Cepheid variables.
  d. in stars with masses less than 0.4 M.
  e. None of the other choices are correct.

[yasmina]

Answer to Question 1

b

Answer to Question 2

b

[Sportsfan2111]

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[yasmina]

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