This is the forty-third video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video explains why cosmologists think that an unknown form of energy exists, that it makes up the majority of the universe’s energy, and of what it might consist. It also covers the expansion of the spacetime, and the consequences for the observable universe.
From the video description:
Table of Contents:
- Majority of the Universe is Made of Dark Energy 4:35
- Dark Energy Accelerates the Expansion of Space 3:42
- We Think The Universe Will Expand Forever 5:20