The helical model - our Galaxy is a vortexPlease consider becoming a Patron to support my work: https://www.patreon.com/djsadhu Patrons will have early access to cool new videos. Part 1: https://www.youtube.com/watch?v=0jHsq36_NTU Part 3: Solar System 2.0!! http://youtu.be/mvgaxQGPg7I More info: http://www.djsadhu.com/the-helical-model-part-2-our-galaxy-is-a-vortex/ Download the sound track for personal use: http://www.djsadhu.com/aud
