Tycho's universe was the same as the Copernican universe except that

Tycho's universe was the same as the Copernican universe except that
 
  a. Earth did not move.
  b. the Sun did not move.
  c. the Moon orbited the Sun.
  d. the orbits were elliptical with the Sun at one focus.
  e. the orbits followed uniform circular motion.

Question 2

A 50-K dense cloud is a blackbody.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 3

Galileo's telescopic discoveries of mountains on the Moon and spots on the Sun were controversial because they suggested that the Sun and Moon
 
  a. were the same kind of object.
  b. were not perfect spheres.
  c. were inhabited.
  d. orbited each other.
  e. did not orbit Earth.

Question 4

A blackbody emits a continuous spectrum.
 
  a. True
  b. False
  Indicate whether the statement is true or false