The first suggestion that there were collections of stars beyond the Milky Way in the universe was made by
A) Edwin Hubble in 1923.
B) Immanuel Kant in 1755.
C) William Parsons, Earl of Rosse, in 1845.
D) Sir Isaac Newton in 1690.
Correct Answer:
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Q4: In the 1920s Edwin Hubble began answering
Q5: The Milky Way Galaxy
A) is one of
Q6: The idea that some of the nebulae
Q7: The event that settled the Shapley-Curtis debate
Q8: Who won the Shapley-Curtis debate when it
Q10: The period-luminosity relationship for Cepheid variable stars,
Q11: The famous Shapley-Curtis debate in 1920 concerned
Q12: Henrietta Leavitt worked out the period-luminosity relation
Q13: Distances to a nearby galaxy can be
Q14: Cepheid variable stars are useful to astronomers
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