Today, scientists cannot see more than 3% of the universe, but this knowledge allows us to estimate the number of galaxies that exist.
American astronomers from the Institute of Planetary Sciences in Arizona (USA) told the scientific portal LiveScience about this.
In their calculations the team used two approaches. The first is based on the idea of the approximate size of the universe and the final mass of galactic structures.
The age of the universe is 13.8 billion years. However, since outer space has expanded in all directions at this time, the total length of the universe should reach 46 billion light years, reports. Noi.md with reference to it ogh.az.
By establishing an upper and lower threshold of the mass of galaxies, scientists have calculated that there could be up to 1-2 trillion galaxies in the universe.
Astronomers also used the second method, based on data provided by the New Horizon space probe in 2021. The probe collected information about the total amount of light in different parts of the sky and estimated how many galaxies would be needed to shine at that time. intensity
Based on the observations of New Horizon, scientists have calculated that there may be a hundred times less galaxies in the Universe than the first study suggested – 100-200 billion.
2024-08-04 21:00:12
#galaxies #universe
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