Dark matter is 84% of the matter in the universe and it single-handedly explains a lot of stuff: cluster motion, galactic rotation, gravitational lensing, and the CMB. We have piles of irrefutable evidence. Let's go through it, shall we.

Nick Lucid - Host/Writer/Editor/Animator
Vanessa R Bradley - Thumbnail
Eric Aspling - Researcher
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VIDEO ANNOTATIONS/CARDS

Most Galaxies are Moving Faster than Light!
   • Most Galaxies are Moving Faster than ...  

The REAL Source of Gravity:
   • The REAL source of Gravity might SURP...  

The Oldest Light in the UNIVERSE! (CMB)
   • Cosmic Microwave Background: The Olde...  
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RELATED YOUTUBE VIDEOS

PBS Space Time on Dark Matter:
   • Does Dark Matter BREAK Physics?  

Crash Course on Dark Matter:
   • Dark Matter: Crash Course Astronomy #41  
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OTHER SOURCES

https://arxiv.org/abs/1811.06406
https://ned.ipac.caltech.edu/level5/S...
https://arxiv.org/abs/1703.00013
https://astronomy.swin.edu.au/cosmos/...
https://ned.ipac.caltech.edu/level5/M...
https://chandra.harvard.edu/
https://hubblesite.org/contents/artic...
https://hyperphysics.phy-astr.gsu.edu...
https://physics.nist.gov/PhysRefData/...
https://physics.nist.gov/PhysRefData/...
https://sci.esa.int/s/wRVmdjw
https://ned.ipac.caltech.edu/level5/S...
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LINKS TO COMMENTS

   • Current does NOT take the Path of Lea...  
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IMAGE CREDITS

Bullet Cluster:
https://chandra.harvard.edu/photo/200...

Chandra Space Probe:
https://images.nasa.gov/details-PIA18166

Coma Cluster:
https://hubblesite.org/contents/media...

Cosmic Microwave Background:
https://sci.esa.int/s/WLGmGdw

Dark Nebula:
https://images.nasa.gov/details-GSFC_...

Earth Map (Mollweide):
https://www.nasa.gov/multimedia/image...

Galatic Rotation:
https://www.eso.org/public/videos/eso...

Galatic Collision:
https://hubblesite.org/contents/media...

Gravitational Lensing:
https://esahubble.org/videos/heic1106a/

Scorpius X-1:
https://images.nasa.gov/details-PIA18845

Twin Quasar:
https://esahubble.org/images/potw1403a/

Type 1a Supernova:
https://svs.gsfc.nasa.gov/13852

People:
https://digital.archives.caltech.edu/...
https://photos.aip.org/history-progra...
https://www.gb.nrao.edu/fgdocs/HI21cm...
https://photos.aip.org/history-progra...
https://photos.aip.org/history-progra...
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TIME CODES

00:00 Cold Open
00:35 Fritz Zwicky
01:44 HR Diagrams
02:51 Doppler Redshift
03:58 Virial Theorem
04:29 Zwicky was wrong
05:33 21 cm Hydrogen Line
06:40 X-Ray Astronomy
07:37 Vera Rubin
08:35 Rotation Curves
10:17 Gravitational Lensing
10:48 Bullet Cluster
12:15 Cosmic Micowave Background
13:50 Summary
14:46 Outro
15:08 Featured Comment