Multiple Choice
___________ is (are) observed when light from a distant quasar travels past a massive galaxy between us and the quasar, and this light is focused to form two or more images of the same quasar.
A) A double-lobed radio galaxy
B) Superluminal expansion
C) The gravitational lens effect
D) A blazar
E) Gravitational waves
Correct Answer:

Verified
Correct Answer:
Verified
Q101: In the double-exhaust model, the radio lobes
Q102: Which distance indicator technique is best to
Q103: Centaurus A is a radio galaxy that
Q104: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5757/.jpg" alt=" -The red line
Q105: What evidence do we have that large
Q107: The hydrogen Balmer line Hβ has a
Q108: When discovered in the 1960's, a(n) _
Q109: The above visual wavelength image of a
Q110: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5757/.jpg" alt=" -The shells indicated
Q111: Poor clusters<br>A)contain more than 1000 stars and