The sources that caused the re-ionization era of the universe, which followed the dark ages, is still an open question in observational cosmology. A recent study from a team of astronomers tries to shed light on this issue.
Astronomers observed the most luminous quasar in the universe, with a luminosity that exceeds 350 trillion times the luminosity of our Sun. The quasar lies at a distance that light needs 12.5 billion years to travel to us. Further study of the object revealed an extremely turbulent behaviour that may explain its extreme luminosity.
On Friday, January 22, NASA invites media for live interviews with scientists and engineers working on James Webb Space Telescope (JWST) the successor to Hubble space Telescope (HST). The audience will have the opportunity to discuss the technology used in building the largest and most powerful space telescope.