The mysterious force driving the universe's accelerating expansion
In short: Most of our universe is composed of an entity we cannot yet identify. This video explores the mechanics of dark energy and how it dictates the ultimate fate of the cosmos.
Dark energy is a pervasive, mysterious entity that causes the expansion of space to accelerate over time. Because of this constant acceleration, the universe is predicted to expand indefinitely, even as our observable view of it shrinks.
The presentation covers the geometry of the universe and the concept of the cosmic horizon. It examines the implications of space expanding faster than the speed of light and what this means for the long-term structure of the cosmos.
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Sources
- Summary by Intellect · source: Dark Energy, Cosmology part 2: Crash Course Astronomy #43
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