A1689-zD1

A1689-zD1 is the most distant and therefore oldest galaxy discovered as of February 2008.cite web
title = Astronomers Eye Ultra-Young, Bright Galaxy in Early Universe
publisher = nasa.gov
date = 2008-02-12
url = http://www.nasa.gov/centers/jpl/news/Spitzer20080212.html
accessdate = 2008-02-25 ] cite web
title = Astronomers Uncover One of the Youngest and Brightest Galaxies in the Early Universe
publisher = Space Telescope Science Institute Baltimore, Md. / nasa.gov
date = 2008-02-12
url = http://www.nasa.gov/mission_pages/hubble/science/young_bright.html
accessdate = 2008-02-25 ]

Due to its distance, 12.8 billion light-years, and the according considerable redshift, ~7.6cite web
title= heic0805: Hubble finds strong contender for galaxy distance record
publisher= ESA/Hubble
date= 2008-02-12
url= http://www.spacetelescope.org/news/html/heic0805.html
accessdate= 2008-04-04] , the galaxy's faint light reaches us at infrared wavelengths. It could only be observed with Hubble Space Telescope's "Near Infrared Camera and Multi-Object Spectrometer" and the Spitzer Space Telescope's "Infrared Array Camera" exploiting the natural phenomenon of gravitational lensing: The galaxy cluster Abell 1689, which lies between Earth and A1689-zD1, at a distance of 2.2 billion light-years from us, functions as a natural "magnifying glass" for the light from the far more distant galaxy which lies directly behind it, at 700 million year after the Big Bang, as seen from Earth.

ee also

* IOK-1

References