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Image for representation.
Observations revealed that after a few hundred million years from the Big Bang, the first galaxies formed.
- Trends Desk
- Last update: April 28, 2020 5:46 PM IST
A 10-year survey of galaxies has opened the door to the question that is asked a lot about the current structure of the universe. Published in the “Monthly Notices of the Royal Astronomical Society,” the study provides “new insights into how gravity drove the growth of the structure from the earliest days of the universe.”
The observation of the galaxies was made by the Magellan Baade Telescope at the Carnegie Las Campanas Observatory in Chile. The investigation was led by Daniel Kelson.
According to Phys.org, Keelson said the team took a “completely new approach” to the fundamental difficulty. The “direct, observation-based test” was performed to study the relationship between the growth of the galaxy and its environment over the past 9 billion years, the time period in which the appearances of the modern galaxy were defined.
Observations revealed that after a few hundred million years from the Big Bang, the first galaxies formed. As the material cooled, neutral hydrogen gas was released. Some of the particles were denser than the others and collapsed inward, due to the force of gravitation, forming the first groups of structure.
The recent study revealed that the denser groups grew faster than the less dense ones. He also demonstrated that “the growth of individual protostructures can be calculated and then averaged across space.”
Thus, scientists were able to calculate growth rates from fluctuations in density back to the “infancy of the universe.”
