Edwin Hubble and Milton Humason discovered that there was a ...

[Tazate]

Edwin Hubble and Milton Humason discovered that there was a linear relationship between a galaxy's ____.
 
  a. rotation curve and distance
 b. mass and luminosity
 c. age and distance
 d. apparent recession velocity and distance
  e. mass and recession velocity

Question 2

Which type of focus is most common for larger telescopes?
 
  a. Cassegrain focus
 b. Galilean focus
 c. Newtonian focus
 d. Copernican focus
 e. Schmidt-Cassegrain focus

[k2629]

Answer to Question 1

d

Answer to Question 2

a

[Tazate]

Great answer, keep it coming

[covalentbond]

Thanks for the timely response, appreciate it