Astronomers have stumbled upon an ancient galaxy, JADES-GS-z13-1, which is 330 million years old and contains a signature emission that sheds light on the early Universe’s history. The discovery has left experts surprised and eager to learn more.
The epoch of reionization, which occurred around one billion years after the Big Bang, marks a critical period in the Universe’s evolution. During this time, the Universe was filled with a thick fog of neutral hydrogen, making it difficult for light to penetrate. However, the presence of JADES-GS-z13-1 reveals that some regions were able to clear this haze, allowing light to stream freely.
The galaxy’s unique signature, Lyman-alpha emission, is only visible after reionization has taken place. This finding contradicts current theories on early galaxy formation and has sparked intense interest among astronomers.
Two possible explanations for the Lyman-alpha brightness have been proposed: a rapidly feeding black hole or massive hot stars. While both options are intriguing, neither can be confirmed at this point.
Future observations of JADES-GS-z13-1 will help scientists refine their understanding of the early Universe’s history and development. The discovery highlights the limitations of current knowledge and the need for further exploration of the cosmos.
Source: https://www.sciencealert.com/galaxy-caught-turning-on-lights-at-cosmic-dawn-stunning-astronomers