![](https://biodynamizer.com/wp-content/smush-webp/2020/03/0_CATERS_MILKY_WAY_STAR_TRAILS_01-800x498-Copie.jpg.webp)
The Milky Way is a spiral (in dextrorotatory rotation) whose diameter is 100,000 light years. Credit: Hubble, ESA
![Voie lactée](https://biodynamizer.com/wp-content/smush-webp/2020/01/espace2.png.webp)
The movement of the stars is a spiral movement. The stars were photographed every 50 minutes and superimposed. Photos taken in South Australia. Credit Christian Sasse, May 2017.