What is Dark Energy?

#darkenergy

What Is Dark Energy?
Dark energy is still a mystery. It affects the expansion of the universe by accelerating it. Because of dark energy everything in space is moving away from everything else at a constant rate. There is approx, 68% of dark energy in the universe, while as dark matter is 27%. Everything else is 5%, and that is observable.

Who discovered dark energy?
In 1929, an American astronomer named Edwin Hubble, noticed that the farther a galaxy is from the Earth, the faster it is moving away from us. Scientists also discovered that the universe is not only expanding, but it is also accelerating in its expansion.

What does dark energy do?
We don't entirely understand the dark energy. Scientists have constructed models of Universe that explain everything from the Big Bang to the modern-day galaxies. Some of these models predict, that dark energy will rip apart everything in existence, billions of years from now.

There is a fierce debate between physicists on the measurement of dark energy. Some researchers measure the power of dark energy using cosmic microwave background, which is a dim echo of big bang. The other set of researchers use the light of distant cosmic objects to measure the dark energy strength, and they came up with a different value, and nobody has yet been able to explain the discrepancy.

Some experts have came up with a scholarly suggestion that the power of dark energy varies, from time to time, however they are not able to convince the majority of the experts on this field.