NSEA · Elementary Astronomy

History of Astronomy

Major astronomers and milestones from ancient observations to modern astrophysics.

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  • Q1 · History of Astronomy · EASY

    Which astronomer first provided observational evidence that the Milky Way is not the only galaxy in the universe by resolving Cepheid variables in the Andromeda Nebula?

  • Q2 · History of Astronomy · EASY

    Who first proposed the heliocentric model of the solar system in the 16th century, marking a major shift in astronomical understanding?

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