The Optical Classification of Galaxies Was Pioneered in the 1930s

question 23

Short Answer

The optical classification of galaxies was pioneered in the 1930s by .

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Definitions:

Predefined Structure

A pre-established framework or pattern used in programming to organize data or processes.

Data

Information that is processed or stored by a computer, which can be in the form of text, numbers, images, or other types.

Routines

Blocks of code or sequences of instructions designed to perform specific tasks or operations within a software program.