Das Rätsel der Dunklen Materie | Grenzen des Wissens

Everything with mass attracts itself. But there is an additional gravitational attraction in the universe of unknown origin. Physics is in the dark and therefore calls the source of this additional gravitational attraction "dark matter." There are two main pieces of evidence for the existence of dark matter: the rotation curves of galaxies and the Einstein rings. ``` 0:00 Introduction to Dark Matter and Dark Energy 1:53 Colliding Galaxy Clusters 6:29 What Our Universe Is Made Of 7:44 What We Know and What We Suspect 11:19 THE FIRST INDICATION: Rotation Curves of Galaxies 12:36 Newton's Law of Gravitation 15:17 Rotation Curves: Theory vs. Experiment 19:20 Rotation Curve of the Milky Way 23:33 Rotation Curves of Other Galaxies 26:14 The Problem with Early Galaxies 31:31 THE SECOND INDICATION: Gravitational Lensing 36:10 Principle of Gravitational Lensing 38:17 Einstein Rings 40:12 Distribution of Dark Matter in Galaxy Clusters 44:09: The Best Measurement of Dark Matter 47:41 Summary Support Prof. Ganteför's time-consuming and expensive YouTube channel with your PayPal donation to [email protected]. More videos are available on the Ganteför channel:    / ganteförklima   ------------ HOMEPAGE: www.gantefoer.ch ------------ #LimitsOfKnowledge is a knowledge-based format.