Author Question: Wendy measures a recession velocity for two distant galaxies, well outside our Local Group of ... (Read 52 times)

captainjonesify · **on:** Jul 27, 2018

Wendy measures a recession velocity for two distant galaxies, well outside our Local Group of galaxies. Galaxy A has a recession velocity of 35,000 km/s and Galaxy B has a recession velocity of 70,000 km/s.

What can she say about the distances to those galaxies?
A) She can't say anything about the distances to Galaxy A or B.
B) Galaxy A is twice as far as Galaxy B.
C) Galaxy B is four times as far as Galaxy A.
D) Galaxy B is twice as far as Galaxy A.
E) Galaxy A is four times as far as Galaxy B.

Question 2

There is no limit to the mass with which a star can be born.

Indicate whether the statement is true or false