Astronomers usually study distant galaxies by looking at them directly through the eyepiece of a telescope.

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Astronomers often use telescopes equipped with detectors, such as cameras or spectrographs, to study distant galaxies. These detectors capture light and other electromagnetic radiation emitted by the galaxies, which is then analyzed and interpreted to obtain information about them. Directly looking through the eyepiece of a telescope may be useful for some observations, but it is not the main method used for studying distant galaxies.

Astronomers Usually Study Distant Galaxies by Looking at Them Directly