Multiple Choice
Which of the following did Edwin Hubble NOT contribute to our understanding of galaxies and their behavior?
A) observations of Cepheid variable stars in spiral "nebulae" and their interpretation
B) a relationship between distance to galaxies and their apparent velocity of recession
C) determination of the ages of galaxies and the correct sequence of evolutionary progress of galaxies
D) a classification scheme for galaxy types
Correct Answer:
Verified
Correct Answer:
Verified
Q21: All of the following systems are gravitationally
Q22: How many large spiral galaxies are there
Q23: What method is used to determine the
Q24: The Hubble classification for a galaxy having
Q25: Astronomers often speak of redshift z rather
Q27: A Cepheid variable is observed in a
Q28: What is the Great Attractor?<br>A)an empty point
Q29: The discovery of the expanding universe began
Q30: One unusual result of galaxy interactions is:<br>A)large
Q31: Maser light in distant galaxies can be