What Was the Implication of the Observation by Edwin Hubble

question 433

Multiple Choice

What was the implication of the observation by Edwin Hubble that the Cepheid variable stars he measured in the Andromeda "nebula" appeared to be very faint compared with what was expected?

• A) The observed period was affected by the intense gravitational field of the "nebula" as predicted by general relativity, leading to incorrect luminosity determination.
• B) The Andromeda "nebula" was very far away and was in fact a galaxy.
• C) Hubble had discovered a new class of intrinsically faint Cepheid variable stars.
• D) Dust and gas in the "nebula" had severely reduced the light from these stars.

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Occurrences

Events or instances where a specific situation or condition takes place.

Letter "H"

The eighth letter of the English alphabet, characterized by a vertical line with two horizontal lines connecting to the top and middle.

Neisser's Research

Refers to the work of cognitive psychologist Ulric Neisser, who is known for his contributions to the study of perception, memory, and the concept of self.

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