Hubble Ultra Deep Field
UDFy-38135539
HUDF-2 — Compact irregular
Distance
13.1 billion ly
Redshift
z = 8.55
Magnitude
28.7
600 million years after Big Bang
First spectroscopically confirmed galaxy at redshift >8. A tiny beacon from the epoch of reionization, when the first galaxies were burning away the cosmic fog of neutral hydrogen.