You are here:
International Year of Astronomy - IYA2009
News Archives until 2010
Security & Defense
Missions and more
Back to article
Redshift of spectral lines in the optical spectrum
Download this image:
Hi-Res JPEG (0.09 MB)
The illustration shows the redshift of the spectral lines of a far-away super galaxy cluster (BAS11). Compared to those of the Sun (left), the spectral lines of the galaxy cluster (right) are shifted upwards, or into the red.
Archive "Astronomy Questions of the Week"