The earliest galaxy seen by a series of telescopic and camera techniques. About 13.2 billion years old.-http://phys.org/news/2012-09-astrophysicists-spy-ultra-distant-galaxy-cosmic.html-While another group uses quasar redshift to study growth of size of the early universe:-http://phys.org/news/2012-09-quasars-mileposts-universe-expansion.html