The astronomer who, at the turn of the century, measured the spectra of hundreds of thousands of stars, leaving a catalog that astronomers used for the rest of the century, was:
A) Edwin Hubble
B) Annie Cannon
C) Cecilia Payne
D) Joseph Fraunhofer
E) James Lick

Question

Quizplus · Accepted Answer

Annie Cannon was the astronomer who classified and measured the spectra of hundreds of thousands of stars in the early 1900s, leaving the famous Henry Draper Catalogue.

The Astronomer Who, at the Turn of the Century, Measured