TRUE Limits Of Humanity – The Final Border We Will Never Cross
A video on YouTube. In Explainers, a Krater category.
Watch on YouTubeSummary by Krater
An exploration of the scale of the universe, examining why 94% of observable galaxies are unreachable and how cosmic expansion isolates our local group over time.
From the video
Answers: How much of the universe is unreachable for us, and why?
- cosmic scale
- observable universe
- cosmic inflation
- galaxy clusters
- dark energy
- cosmological horizon
- speed of light
What it concludes
- Around 94% of the galaxies we can see in the observable universe are already unreachable for us forever.
- The universe expanded rapidly during cosmic inflation from the size of a marble to trillions of kilometers in a trillionth of a second.
- Dark energy causes the expansion of the universe to accelerate, meaning everything beyond our cosmological horizon is traveling faster than the speed of light relative to us.
- All galaxy pockets more than about 18 billion light years away are moving away faster than we could physically reach them.
- The Local Group will eventually merge into one giant elliptical galaxy called Milkdromeda in a few billion years.
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