galactic light

galactic light

[gə′lak·tik ′līt]
(astronomy)
The part of the illumination of the night sky that is due to light emitted from stars but diffused through interstellar space.
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References in periodicals archive ?
To analyze galactic light as discrete points, the astronomers relied on a highly sensitive, computer-chip-like detector known as a charge-coupled device (CCD), which contains a grid of light-sensing elements.
Spectra of the galactic light indicate that faint red dwarfs account for 80 percent of stars in elliptical galaxies.
To pick out Lyman-alpha emission from the general background of galactic light, astronomers must use a filter that permits the passage of only a very narrow range of wavelengths.