Dunkle Materie | Josef M. Gaßner

What exactly do we mean by "dark matter"? What is the current status in 2015? Is there direct evidence? How do we measure it? What are the theoretical approaches? Approximately 27% of the universe consists of a previously unknown form of matter that apparently does not interact with light (electromagnetically). Nevertheless, we are gradually succeeding in unraveling its nature. Josef M. Gaßner explains the connections. You can find the article on dark energy here:    • Video