Multiple Choice
What mechanism appears to produce the double-radio sources seen in intergalactic space?
A) two oppositely directed jets of matter, ejected from a small source
B) two radio galaxies orbiting each other much like two binary stars
C) radio-bright galaxy with a dark absorbing disk edge-on to Earth, splitting the source into two as seen from Earth
D) two black holes orbiting around a small but massive galactic nucleus
Correct Answer:

Verified
Correct Answer:
Verified
Q87: Which of these is a characteristic of
Q88: Astronomers believe a supermassive black hole of
Q89: What is the origin of fast radio
Q90: Observations indicate that BL Lacertae objects are<br>A)
Q91: Which of these statements has NOT provided
Q93: Which of these designations does NOT refer
Q94: What are the typical characteristics of a
Q95: Redshifts revealed the radio source Cygnus A
Q96: One of the first three astronomical objects
Q97: In observations of a double quasar image