The Helical Model By Trygve BergMarch 29, 2018March 29, 20188th Grade Science Photo credit: DjSadhu This animation shows a helical model of our solar system. Photo credit: DjSadhu This animation shows a helical model of our Milky Way galaxy. Save Save TweetPinShare0 Shares
Photo credit: DjSadhu
Photo credit: DjSadhu