1. Walter Orlov The Hidden Galaxy The Basic Idea

2. The rotation curves of spiral galaxies are not only flat

3. but still oscillating

4. Example - "Milky Way"!

5. Approximation of the mass density by oscillating function shows a minimum in the solar neighborhood

6. We are in the almost empty space and so can the "Dark Matter" does not see. It is hidden far away from us - in the galactic arms!

7. This is reminiscent of the asteroid belt in the solar system or planetary rings around Saturn and Jupiter. Therefore the dark matter may be composed of rock (asteroids and planets) and water (comets). The full text in German http://www.walter-orlov.wg.am/kosmologie.pdf