Using binary galaxies to find their masses assumes that, like ...

[c0205847]

Using binary galaxies to find their masses assumes that, like double stars, their orbits obey ________ laws of Planetary Motion.
 
  A) Einstein's
  B) Kepler's
  C) Galileo's
  D) Newton's
  E) Schwarzchild's

Question 2

A type B9 star is hotter than a type A0 star.
 
  Indicate whether the statement is true or false

[Ksh22]

Answer to Question 1

B

Answer to Question 2

TRUE