kids encyclopedia robot

Image: Cumulative-absorption-spectrum-hubble-telescope

Kids Encyclopedia Facts
Cumulative-absorption-spectrum-hubble-telescope.jpg ‎(800 × 600 pixels, file size: 137 KB, MIME type: image/jpeg)

Description: Illustrates cumulative absorption spectra observed by Hubble. 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 colors 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.
Title: Cumulative-absorption-spectrum-hubble-telescope
Credit: http://hubblesite.org/newscenter/newsdesk/archive/releases/1998/41/image/r
Author: NASA/STScI
Permission: http://hubblesite.org/copyright/
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

The following 2 pages link to this image:

kids search engine
All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise.