Concept explainers
Edwin Hubble is famous for
(a) building the first telescope.
(b) discovering the nature of Cepheids.
(c) discovering Cepheids in the Andromeda nebula.
(d) determining the mass of the Milky Way Galaxy.
To determine: The correct option for the statement “Edwin Hubble is famous for”.
Answer:
The correct option for the statement “Edwin Hubble is famous for” is option (c).
Explanation:
A Cepheid variable is a special kind of star that throbs radially, with shifting width and temperature and delivering changes in brilliance with an all-around characterized stable period and abundance. The period of Cepheids is regular means the time they are required to brighten and dim and brighten again is uniform.
In 1923, when Edwin Hubble was studying photographic plates of the Andromeda Nebula M31 with a 100-inch telescope, he encountered a Cepheid variable.
Conclusion:
Therefore, the correct option for the statement “Edwin Hubble is famous for” is option (c).
Chapter 34 Solutions
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