James Webb reveals the mystery of bright galaxies in the early Universe

Bright galaxies in the early universe may be the result of intense star formation rather than a failure of the standard model of cosmology. This interesting conclusion was reached by the James Webb Space Telescope (JWST).

The bright galaxies discovered by James Webb may be due to bursts of intense star formation. These discoveries correct standard ideas about the development of galaxies and their brightness in the early eras of the Universe.

When the JWST space telescope began observing in the summer of 2022, it quickly identified galaxies with high redshifts, meaning they existed in the early stages of the Universe. But they turned out to be brighter than predicted by the standard model of cosmology, raising questions about the correctness of this model.

Researchers who created computer simulations of the birth of these galaxies and the process of star formation came to the following conclusions:

• Bright galaxies were spotted due to intense star formation. That is, they became so bright due to active star formation bursts.
• These bursts of activity caused by massive star formation are not unique. In modern galaxies, they are also observed during galaxy mergers, where gravity traps gas and leads to the formation of new stars.
• In the early Universe, galaxies were smaller and grew by attracting intergalactic gas and merging with each other. The larger they became, the more gravity formed stars within them. This process stabilized the rate of star formation.

These discoveries provide a better understanding of how galaxies formed in the early universe and change our understanding of how galaxies could become so bright so early.