Edwin Hubble Measured the Distance to the Andromeda Galaxy

question 45

Multiple Choice

Edwin Hubble measured the distance to the Andromeda Galaxy. How did he do that?

• A) He applied the period-luminosity relation to Cepheids.
• B) He measured the parallax of the Andromeda Galaxy.
• C) He estimated the number of galaxies in the universe.
• D) He applied the white dwarf brightness relation.

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Definitions:

Traffic Cones

Safety devices used to signal or demarcate areas on roads or construction sites, typically cone-shaped and brightly colored for visibility.

Instrument Decay

The phenomenon where measurement tools or instruments become less accurate over time due to usage, age or environmental conditions.

Human Observers

Individuals who watch and record behaviors or phenomena in research settings, often used for qualitative data collection.

Measurement

The process of quantifying or qualitatively assessing variables, objects, or events.