"Classifying the stars has helped materially in all studies of the structure of the universe"

Annie Jump Cannon's quote talks to the importance of classifying stars in comprehending the structure of the universe. By categorizing stars, astronomers are able to much better understand the composition of deep space and its numerous elements. This classification system, which Cannon developed, is based upon the stars' temperature levels and spectral lines. By studying the stars' temperature levels, astronomers can identify the age and size of stars, as well as their structure. Additionally, the spectral lines of stars can be utilized to recognize elements in the stars, which can then be used to identify the structure of the universe. Simply put, categorizing stars has actually been an essential factor in assisting astronomers understand the structure of deep space.