The Dark Matter Mystery [4K]

Dark Matter is a theoretical form of invisible mass, which is believed to be present in galaxies, but has never been seen or detected. You've probably heard of it before, as it makes up a large part of the physics you find in textbooks. But how can something that's never been seen have so much scientific confidence? Furthermore, why can't we see dark matter to begin with? And if we can't see it, how do we know that it is really there? And if it's not there, what are the alternative ideas? These are the questions we will be aiming to answer, as we dive into the Dark Matter mystery.

The soundtrack was created by SpaceWave - Cosmic Relaxation.
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FOOTAGE:
The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:

SOURCES OF INFORMATION:

(NON-ENGLISH VIEWERS)
To get subtitles in another language, click the [CC] button in the bottom right corner of the screen, then click the Settings (cogwheel) icon next to it, click "Subtitles / CC" and click "Auto-Translate", and select your language from there.

TIMESTAMPS:
0:00 Introduction
1:53 What is Dark Matter?
5:00 Signs of Missing Mass
8:21 Lambda-Cold Dark Matter Model
11:21 Dark Matter in the Early Universe
14:12 Dark Matter Filaments
16:51 Dark Matter Haloes
20:22 The Bullet Cluster
22:30 Gravitational Lensing
24:23 Weakly Interacting Massive Particles
26:20 Search for Dark Matter
28:09 Annihilation Detection
31:00 Alternative Theories
32:57 Modified Gravity
35:31 Entropic Gravity
38:06 Dark Energy?

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[antonleimbach]

There is no Dark Matter, we just don’t completely understand gravity.

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