The theory of big Bang He states that the universe was in a state of very high density and temperature and then expanded. Modern measurements date to this moment approximately 13.8 billion years ago, which would therefore be the age of the universe.
According to a new study conducted by Johns Hopkins University and that has been published in the journal Physical Review Letters. however dark matter it could be even older than the Big Bang itself. While the idea that dark matter existed before the Big Bang is not new, other theorists have not been able to make calculations that support the idea.
Of all the matter in the visible universe, only 4% is normal matter, like the matter from which all the things we know are formed. 23% is made of dark matter (invisible), that physicists intuit that it exists but do not know what it is. The remaining 73%, that is, almost all the matter in the universe, is dark energy, which is also invisible.
While not much is known about its origins, astronomers have shown that dark matter plays a crucial role in the formation of galaxies and clusters of galaxies.
As he explains Tommi Tenkanen, postdoctoral fellow in Physics and Astronomy at Johns Hopkins University and author of the study:
The study revealed a new connection between particle physics and astronomy. If dark matter consists of new particles that were born before the Big Bang, they affect the way galaxies are distributed in the sky in a unique way. This connection can be used to reveal your identity and draw conclusions about the times before the Big Bang as well. We don't know what dark matter is, but if it has something to do with scalar particles (represented in the spatial distribution of a magnitude), it may be older than the Big Bang. With the proposed mathematical scenario, we do not have to assume new types of interactions between visible and dark matter beyond gravity, which we already know is there. We will soon learn more about the origin of dark matter when the Euclid satellite is launched in 2022.