Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

intergalactic absorption




The absorption of light from distant objects by material in intergalactic space; it is too feeble to notice in the case of nearby galaxies but gives rise to the Lyman-alpha forest of spectral lines superimposed on the spectra of quasars and other objects billions of light-years away.


Related category

   • INTERSTELLAR AND INTERPLANETARY MATTER