Scientists had discovered by the end of the last century that the expansion of the universe is not slowing down but it is accelerating.
Earlier scientists usually thought that the gravitational forces of the universe will slow down its expansion. But the acceleration of the universe can only be explained by two things that are either our gravitational theory is flawed or the universe is made up of 70% dark energy that is helping it to overcome the forces of gravity.
An international team of researchers known as ESSENCE have now added new pieces to the puzzle. They have released the detail observations of supernova explosions that allow the researchers to trace the expansion of the universe. The team has also observed the light from the dying stars that was emitted billions of years ago.
Researchers have now commented that there are many models that can explain this acceleration of the universe despite the gravitational forces that keep it back. But still the best model that can explain this consequence is the model that was proposed by Einstein back in 1917.
Einstein had said that the universe is made up of Dark Matter or Vacuum and this vacuum has immense energy that can pull the universe. Though, the theory of Einstein was flawed when he made it as people then thought that the universe is static and not moving in any direction. But now when researchers have found out that the Universe is not static and is moving so we can say that the theory put by Einstein is the best possible way to explain it else we will have to think that the Gravitational theory put forward by Newton is flawed.
Thus we can answer the expansion of the universe can be answered by adding Einstein’s Cosmological Constant that is the energy of Vacuum to the gravitational theory.
Via: physorg
