Although it is known that the universe is expanding faster than previously thought, the cause of the phenomenon is still a question mark.
The Space Telescope Science Institute (STScI) of Baltimore, United States, recently announced the finding that the universe is expanding faster than previous estimates, raising the notion that galaxies are shifting faster than expected.
This team of researchers also raised a number of speculations about the causes that can trigger the phenomenon occurs.
One possible explanation is the influence that dark energy generates. This mysterious resource is claimed to be the mastermind of the accelerated expansion of the universe by keeping the galaxy one with the other at high intensity.
In the description, the expansion of the universe does not have constants because its value will change over time.
While other speculation involves dark matter that covers 80% of all matter in the universe. The research team says that dark matter creates a stronger reaction to visible matter or radiation than previously thought, which has an impact on the acceleration of the expansion of the universe.
Another theory raises a new type of subatomic particle that has the ability to roam near the speed of light and is only affected by the force of gravity.
Researchers know him as a super-fast particle called sterile neutrino. Meanwhile, based on studies published in The Astrophysical Journal, the sterile neutrino in large quantities that collect into one is called dark radiation (dark radiation).
The research team from STScI itself plans to use data from the Hubble Space Telescope and the Gaia Space Observatory of the European Space Agency (ESA) to accurately assess the position and distance between stars in the future.
This is done to provide the most appropriate estimation of the extent of expansion of the universe in the future.