The lobes of a radio galaxy can be as much as:
A) dozens of light years from the galaxy's nucleus.
B) hundreds of light years from the galaxy's nucleus.
C) thousands of light years from the galaxy's nucleus.
D) millions of light years from the galaxy's nucleus.
E) billions of light years from the galaxy's nucleus.
Question 2Jupiter is noticeably oblate because:
A) it has a strong magnetic field.
B) it has such powerful gravity.
C) it rotates rapidly.
D) it undergoes a gravitational attraction from each of its various moons.
E) it has a mantle of liquid metallic hydrogen.
Question 3Which of these devices helps correct coma in fast reflectors?
A) Cassegrain secondary mirror
B) star diagonal
C) achromatic doublet
D) Schmidt corrector plate
E) Newtonian secondary mirror
Question 4What happens to the core of a star after a planetary nebula occurs?
A) It contracts from a protostar to a main-sequence star.
B) It breaks apart in a violent explosion.
C) It becomes a white dwarf.
D) It becomes a neutron star.
E) none of the above
Question 5The average density of the Moon is less than that of the Earth.
Indicate whether the statement is true or false
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