WhyCosmo

Astronomers have made an incredible discovery of a pair of galaxies merging 12.8 billion years ago , which will deepen our understanding of early galaxy evolution. This cosmic dance is expected to birth a "monster galaxy" —one of the universe's brightest and most powerful objects . Artist's impression of the interacting galaxies observed in this research. The gravitational interactions during the merger trigger both starburst and quasar activity. Credit: ALMA (ESO/NAOJ/NRAO), T.Izumi et al. Using the ALMA radio telescope, an international team led by Takuma Izumi studied these galaxies in the constellation Virgo during the universe's infancy, just 900 million years after the Big Bang. The team observed a "bridge" of gas and dust connecting the galaxies, confirming that they were in the process of merging. This discovery suggests that the merger will result in more vigorous quasar activity caused by gas falling into supermassive black holes and lead t...

  In an astounding breakthrough, the James Webb Space Telescope (JWST) has captured the birth of some of the universe's earliest galaxies. This unprecedented observation marks the first time astronomers have witnessed such early galactic formation. The Discovery A new study published in Science reveals that JWST detected three infant galaxies forming from a primordial cloud of hydrogen and helium gas just 400 to 600 million years after the Big Bang. This period is known as the era of reionization, a crucial phase when the earliest stars and galaxies began to shine through dense gas clouds, leading to the transparent universe we know today. "These galaxies are like sparkling islands in a sea of otherwise neutral, opaque gas," said Kasper Heintz, lead author and assistant professor of astrophysics at the Cosmic Dawn Center (DAWN), University of Copenhagen. "Without Webb, we would not be able to observe these very early galaxies, let alone learn so much about their form...