A STIS absorption spectrum

A beam of light coming to Earth from a distant quasar passes through numerous intervening gas clouds in galaxies and in intergalactic space. These clouds of primeval hydrogen subtract specific colours from the beam. The resulting 'absorption spectrum, ' recorded by Hubbles Space Telescope Imaging Spectrograph (STIS) is used to determine the distances and chemical composition of the invisible clouds.


About the Image

NASA press release
NASA caption
Release date:23 November 1998, 21:00
Size:800 x 600 px

About the Object

Type:Unspecified : Galaxy : Activity : AGN : Quasar
Unspecified : Technology : Observatory : Telescope
Category:Quasars and Black Holes

Image Formats

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158.3 KB
Screensize JPEG
211.6 KB

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