According to researchers at California Institute of Technology or Caltech, they have discovered a 13.2 billion-years-old galaxy. It is reported to be most distant galaxy ever discovered. The galaxy has been named as EGS8p7 and is extraordinarily luminous and is probably powered by a population of extremely hot stars.

The universe itself is estimated to be nearly 13.8 billion years old. According to Sirio Belli, Caltech graduate student who contributed to the project, "It may have special properties that enabled it to create a large bubble of ionized hydrogen much earlier than is possible for more typical galaxies at these times".

As per current scientific theory, after the Big Bang, the universe was having charged particles and light, or photons.

The first galaxies activated and re-ionized the neutral gas when the universe was only a half-billion to a billion years old. At present, the universe continued to be ionized. But before re-ionization, clouds of neutral hydrogen atoms would have absorbed particular radiation released by newly forming galaxies.

This would consist of the Lyman-alpha line that is the spectral signature of hot hydrogen gas, which has been heated by ultraviolet release from new stars. Hypothetically, as a result of this absorption, observation of a Lyman- alpha line from EGS8p7 should not have been possible.

According to Adi Zitrin, NASA Hubble post-doctoral scholar in astronomy, when it comes to the galaxies in early universe, there is a lot of neutral hydrogen that is not transparent to this production.