Scientists were able to run a simulation called “Thesan” to help explain the radiation of the first light in the universe, according to a report published by the “Science Alert” website.
The Thesan simulation is based on realistic models of galaxy formation, based on an algorithm to reproduce how light interacts with surrounding gas, and a model of cosmic dust.
This simulation is the most detailed that gives a picture of the formation of galaxies early and how they interacted with the gases of the universe at the time, and how the light began to leak.
Aaron Smith, of the Kavli Institute for Astrophysics and Space Research at the Massachusetts Institute of Technology, said the simulation was a “bridge to the early universe”.
He added that this simulation is ideal for finding out the reasons for the origin of the universe, and for observing the upcoming changes.
Astrophysicist Rahul Kanan, of the Harvard-Smithsonian Center for Astrophysics, said: “Most astronomers don’t have laboratories to conduct experiments. The scales of space and time are very large, so the only way we can do experiments is on computers.”
“We are able to take basic physics equations and theoretical models to simulate what happened in the early universe,” he added.
The report notes that there was a time when the universe was nothing more than an opaque sea and swirling swirls of gas, but by a billion years old all of this had changed, as radiation from stars caused a drastic change allowing light to flow freely across the electromagnetic spectrum.
He added that most of what we know about the universe we learned from light, so when the light is obstructed in some way, this causes some problems such as black holes that do not emit any detectable radiation.
The simulation attempts to re-enact the “cosmic dawn”, which arose about a billion years after the Big Bang, when the universe before that was full of fog and gas, which was what caused the scattering of free electrons.
Once the universe began to cool, the protons and electrons began to recombine to form neutral hydrogen atoms, which allowed light to travel through space.
The universe entered the era of reionization when the first stars and galaxies began to form, about 150 million years after the Big Bang.