"Massive Cosmic Bubble: A Glimpse into the Big Bang's Ancient Remnants"

Astronomers have discovered a massive bubble of galaxies, named Ho'oleilana, located around 820 million light-years from Earth and spanning one billion light-years wide. This cosmic bubble could be a fossilized remnant from the Big Bang, resulting from density ripples known as Baryon Acoustic Oscillations (BAOs). Ho'oleilana is composed of previously identified structures, including superclusters and a void, and its existence challenges theoretical expectations. The discovery could have implications for understanding the formation and evolution of the universe, as well as the rate of its expansion.