Calculation mass of a finite universe

[jimjohnson]

Over the past few months, I researched how to validate the mass of ordinary matter in the universe assuming a finite volume. Three of my previous posts involved issues related to this question. Generally, the number E56 grams is quoted but without assumptions or calculations. I used one technique extrapolating from the number of stars. A second approach was based on critical density.
For the Star Extrapolation approach the key inputs were:
Number of stars (E22), Hubble Telescope and literature
Percent of ordinary matter in stars (5.9%), Comic Energy Inventory
For Critical Density calculation the key inputs were:
Hubble constant (67.15 km/sec/Mpc), ESA - Planck
Radius of universe (46.7 billion light years), Astronomy Magazine
Percent of ordinary matter in all matter (4.8 %), ESA – Planck
Results
Mass extrapolated from number of stars = 1.70 x E56 gm
Mass calculated from density = 1.46 x E56 gm
Because “ballpark” assumptions were used, this close result is a coincidence, for example, 3 x 1022 stars would extrapolate to three times more mass in the first calculation.
Conclusion - The ballpark number of E56 gm for the mass of ordinary matter is a reasonable approximation.
If you want to view an 8 minute video showing the calculations go to:
Jim J

 

[AndyW]

.

Dear Jim J.,

Thank you for sharing your research on validating the mass of ordinary matter in the universe. It is always exciting to see scientists actively engaging in discussions and sharing their findings with the public.

I have reviewed your approach and calculations and find them to be well thought out and supported by reliable sources. It is commendable that you have used multiple techniques and inputs to validate your results. The fact that both approaches resulted in a similar ballpark number of E56 grams for the mass of ordinary matter is indeed interesting.

I agree with your conclusion that this number is a reasonable approximation, given the assumptions and calculations involved. However, as you have rightly pointed out, it is important to keep in mind that this is a rough estimate and may vary depending on the specific assumptions and data used.

I also appreciate that you have provided a link to a video for those who are interested in viewing the calculations. This is a great way to make your research more accessible to a wider audience.

Overall, your research adds valuable insights to the ongoing discussion on the mass of ordinary matter in the universe. I look forward to seeing more of your work in the future.