Scientists are going to do experiments to test a theory made by Albert Einstein over a hundred years ago.
These tests may finally answer the question what drives the universe expansion.
Researchers for a very long time have been looking to find out what drives the universe expansion. Calculations is this new study can help to explain whether dark energy is responsible or a revised theory of gravity.
In the theory postulated by Einstein, gravity is a distortion of space and time, and he included a mathematical element called the Cosmological Constant. However he discarded it later, finding that the universe is not static but expanding.
A research was done twenty years ago, that showed that the acceleration was increasing, and suggest that the Einstein’s constant may still have a place in explaining it for accounting dark energy. Without it, the Einstein’s theory of gravity may fail across very large distances.
A study ran from the scientists at University of Edinburgh have discovered that is can be solved by determining the speed of gravity using gravitational waves.
If the gravitational waves are the same speed of light, this rules out any other gravity theories, with no dark energy, and supports Einstein’s Cosmological Constant.
This experiment could be carried by the Laser Interferometer Gravitational-Wave Observatory (LIGO) in the Unites States, who two years earlier detected the gravitational waves for the first time.
The tests planned there may solve the question in time for the 100th anniversary of Einsten’s Constant.
“Recent direct gravitational wave detection has opened up a new observational window to our Universe. Our results give an impression of how this will guide us in solving one of the most fundamental problems in physics.” said Dr Lucas Lombriser, of the University of Edinburgh’s School of Physics and Astronomy