A New Study Confirms That Gravity has Remained Constant for the Entire age of the Universe

Astronomers have known for a long time that the Universe has expanded. The expansion rate was held back by the force of gravity for the first 8 billion years. Astronomers have learned that the rate of expansion has accelerated since the Hubble Space Telescope was launched. Some argue that the force of gravity may have changed over time, while others believe that a mysterious force is behind the expansion.

The hypothesis that Einstein's General Theory of Relativity is wrong is a contentious one. The nature of gravity has remained the same throughout the history of the Universe according to a new study. Next- generation space telescopes will be sent to space to conduct even more precise measurements of gravity and its role in the evolution of the universe.

Researchers from universities and institutions in the US, UK, Canada, Chile, Spain, Brazil, Germany, Japan, Italy, Australia, Norway, and Switzerland make up the DES Collaboration. The third year of their findings were presented at the International Conference on Particle Physics and Cosmology, which took place in Rio de Brazil from August 22nd to 26th. The paper titled "Dark Energy Survey Year 3 Results: Constraints on extensions to Lambda CDM with weak lensing and galaxy clustering" was published in the American Physical Society journal Physical Review D.

This theory has accurately predicted the existence of black holes and Mercury's position in the Universe for over 100 years. Astronomers wondered if Einstein's theory was right after two discrepancies were discovered. Astronomers found that the effects of massive structures on their observed mass were not compatible with their observed mass.

Space is filled with an invisible mass that interacts with normal. The theory of dark energy and cold dark matter was created by the observed expansion of the universe. Cold Dark Matter is an interpretation where the mass is made of slow moving particles. All attempts to find proof of the two forces have failed.

There is only one way to account for these discrepancies. In order to find out if that is the case, members of the DES used a telescope to look up to 5 billion light-years away. They wanted to know if gravity has changed over the past 5 billion years or if it has remained the same. The Cosmic Microwave Background (CMB) has been mapped by the European Space Agency's Planck satellite since 2009.

They looked at the images they saw to see how dark matter distorted them. Scientists can infer the strength of gravity by looking at the extent to which a gravitational lens distorts space time. The shapes of over 100 million galaxies have been measured by the DES Collaboration. Einstein's theory still holds, but this also means that the mystery of Dark Energy continues for the time being.

New and more detailed data will be available soon. The EUC mission is slated for launch by the end of the decade. The purpose of this mission is to map the geometry of the Universe and measure the effects of dark matter and dark energy. The Nancy Grace Roman Telescope will look back over 11 billion years. The surveys are expected to provide the most compelling evidence for or against the model.

Agns Ferté, the study co-author, was a researcher at JPL.

“There is still room to challenge Einstein’s theory of gravity, as measurements get more and more precise. But we still have so much to do before we’re ready for Euclid and Roman. So it’s essential we continue to collaborate with scientists around the world on this problem as we’ve done with the Dark Energy Survey.”

Astronomers will be able to chart the evolution of the universe from its earliest periods with the help of observations from the early days of the universe. Some of the most pressing mysteries in the universe could be answered by these efforts. The observed mass and expansion of the Universe coincide with the observed mass and expansion of the Theory of Everything.

The current era of astronomy is characterized by the way that long-term surveys and next- generation instruments are coming together to test what has been the stuff of theory. The potential breakthrough that these could lead to is sure to be both exciting and confusing. They will change the way we view the universe.

There is further reading on NASA.