our understanding of the composition of the universe suggests that ordinary matter, which includes protons, neutrons, and electrons, accounts for approximately 5% of the total energy density of the universe. The remaining energy density is thought to be composed of dark matter (about 27%) and dark energy (about 68%).
If future observations, such as those made by the James Webb Space Telescope (JWST), were to reveal hundreds of thousands more galaxies than anticipated, it would certainly have implications for our understanding of the distribution of ordinary matter in the universe. However, predicting the exact increase in the amount of ordinary matter is challenging without specific observational data.
The discovery of more galaxies could potentially indicate a higher density of ordinary matter than previously estimated. It is difficult to quantify the exact increase without further information about the mass distribution and properties of these additional galaxies. It would require detailed observations and analysis to determine the precise impact on the overall fraction of ordinary matter in the universe.
Future discoveries and advancements in observational astronomy, particularly from telescopes like the JWST, will provide valuable insights into the nature and distribution of matter in the universe, allowing us to refine our estimates of ordinary matter beyond the current 5%.