Quasars usually have their distances measured by what technique?

Quasars usually have their distances measured by what technique?
 
  A) Type II supernovae
  B) Cepheids
  C) Parallax
  D) Hubble's Law
  E) Tully-Fisher relation

Question 2

The Great Red Spot has been seen on Jupiter as long as we have had telescopes capable of observing it.
 
  Indicate whether the statement is true or false

Question 3

A telescope with a 60 mm objective lens collects how many times as much light as does your eye's 6 mm exit pupil?
 
  A) 5 times
  B) 10 times
  C) 25 times
  D) 100 times
  E) 250 times

Question 4

What happens when a star exhausts its core hydrogen supply?
 
  A) Its core contracts, but its outer layers expand and the star becomes bigger and brighter.
  B) It contracts, becoming smaller and dimmer.
  C) It contracts, becoming hotter and brighter.
  D) It expands, becoming bigger but dimmer.
  E) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness.

Question 5

The discovery of Eris
 
  A) was surprising, since we thought we knew about all large objects in the solar system.
  B) was not surprising, because other Kuiper belt objects approaching the size of Pluto had already been discovered.
  C) was surprising, due to its backwards orbit around the Sun.
  D) was not surprising, because the existence of a massive Planet X had been predicted nearly a century ago.