3. How is dark energy related to the theory of the Big Bang?
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2 points
It causes the spinning of galaxies.
It seeded the formation of galaxies and star clusters.
It causes the universe to expand.
It causes the expansion of the universe to accelerate.
The correct answer is: It causes the expansion of the universe to accelerate. Dark energy is a hypothetical form of energy that is believed to exist and permeate throughout the entire universe. It is thought to be responsible for the observed accelerated expansion of the universe since the Big Bang.
Dark energy is related to the theory of the Big Bang because it causes the expansion of the universe to accelerate.
The correct answer is: It causes the expansion of the universe to accelerate.
Dark energy is a theoretical form of energy that is believed to exist in order to explain the accelerating expansion of the universe. This concept is closely related to the theory of the Big Bang because it helps explain the behavior and evolution of the universe after its initial explosive expansion.
To understand how dark energy is related to the theory of the Big Bang, we need to go back to the beginning. According to the Big Bang theory, the universe started from a singularity, an extremely hot and dense point, around 13.8 billion years ago. As the universe expanded, matter and radiation began to cool and form galaxies, stars, and other celestial objects.
One of the key properties of the universe is its rate of expansion. Initially, it was thought that the expansion would gradually slow down over time due to the gravitational pull of matter. However, studies in the late 1990s provided evidence that the expansion of the universe is actually accelerating.
This observation led to the hypothesis that there must be a mysterious force pushing galaxies apart, counteracting the pull of gravity. This force was named "dark energy." Dark energy is thought to make up about 68% of the total energy content of the universe, with dark matter accounting for about 27% and visible matter making up only about 5%.
While the exact nature of dark energy is still not fully understood, its existence is necessary to explain the observed accelerated expansion of the universe. It is believed that dark energy acts as a repulsive force, causing space itself to stretch and galaxies to move away from each other at an increasing rate.
In conclusion, dark energy is related to the theory of the Big Bang because it helps explain the accelerating expansion of the universe that occurred after the initial explosion.