In 1998, two teams of scientists measured the universe's rate of expansion, expecting to find the gravity of the Cosmic Web bringing the universe into a collapse. But instead, they found that the universe's expansion appears to be accelerating having expanded more in the latter half of its life.
Both teams agreed upon the existence of a new type of energy field, known as Dark Energy, to drive this acceleration, and in doing so, they revived one of Einstein's longrebuked ideas the Cosmological Constant.

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FOOTAGE:
The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:
http://spaceengine.org/
Get SpaceEngine on Steam: https://store.steampowered.com/app/31...

Reallife images of space and some scientific visualisations are public domain content provided by NASA and the ESA.
NASA: https://www.nasa.gov
ESA: https://www.esa.int

Multiple graphic sequences were provided by Vecteezy.com
Pro License Account: https://www.vecteezy.com/members/sea...

SOURCES OF INFORMATION:
Defining Dark Energy & some Theories on its Nature: https://astronomy.swin.edu.au/cosmos/...

What Do We Really Know about Dark Energy? https://arxiv.org/pdf/1103.5331.pdf

1998 Paper by High Z Supernova Search Team Invoking the Cosmological Constant: https://arxiv.org/abs/astroph/9805201

Have Dark Forces Been Messing with the Cosmos? https://www.nytimes.com/2019/02/25/sc...

Concordance Cosmology & LambdaCDM: https://phys.libretexts.org/Bookshelv...

BAOs and Standard Rulers: https://arxiv.org/abs/0801.0642

Misconceptions About the Big Bang: https://web.archive.org/web/201107192...

Cosmological Constant & its Problems: http://hosting.astro.cornell.edu/acad...

Quintessence / KEssence: https://arxiv.org/abs/astroph/0006373

Phantom Energy & the Big Rip: https://arxiv.org/abs/astroph/0302506

CHAPTERS:
0:00 Introduction
2:27 Accelerating Expansion
5:09 Einstein's Greatest Blunder
8:26 How Space Expands
12:11 Redshift & Standard Candles
17:03 Type 1a Supernova Searching
19:25 ΛCDM
22:08 Baryonic Acoustic Oscillations
26:27 Future Missions to Study Dark Energy
28:46 Vacuum Fluctuations
32:29 Quintessence
34:43 Phantom Energy
37:17 The Big Rip

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Cosmological Constant