Multiple Choice
You measure the redshift of a distant galaxy and find, using Hubble's law and assuming a Hubble constant of 70 km/s/Mpc, that its distance is 1 billion ly (310 Mpc) .Imagine that an observer in that galaxy is measuring the recession speed of the Milky Way at the same time as your measurement.What would be the speed that the remote alien observer would record?
A) 700 km/s
B) 21,500 km/s
C) 3,400 km/s
D) 10,700 km/s
E) 6,300 km/s
Correct Answer:
Verified
Correct Answer:
Verified
Q50: Astronomers use galactic redshift as a measure
Q51: Explain how Hubble's law can be used
Q52: Hubble's constant, H<sub>0</sub>, represents the<br>A) rate of
Q53: In the figure below, three identical photons
Q54: If the temperature of the CMB changes
Q56: Where did the Big Bang occur? Explain
Q57: Explain the different types of redshift you
Q58: Scientists indicate that the first stars probably
Q59: The CMB fluctuations of 0.001 percent seen
Q60: In an imaginary universe, astronomers find that