Images taken in October / November 2011 from the Hubble Space Telescope and the CLASH programme (Cluster Lensing And Supernova survey with Hubble).
The CLASH used multi-wavelength techniques to image the most distant galaxy by means of a cosmic telescope known as Gravitational Lensing. This is where the light from distant objects is magnified by the gravity from a massive foreground object and is therefore a very useful tool for studying very distant objects.
In this instance the gravitational mass from the bright yellow cluster of galaxies MACS J0647 magnifies the light from the more distant galaxy MACS0647-JD.
In the enlarged image below the tiny dwarf galaxy MACS0647-JD can be seen, at a redshift of Z=10.7, over 13.3 billion light years away / only 420 million years after the big bang.