I had a lot of fun creating these galactic structures in ZBrush for the opening sequence of 65. The real hard work was done by Teun van der Zalm (https://www.salmonick-atelier.com/) and Lee Nelson at Filmograph, I just pitched in with some goopy ZBrush geo based on reference. but Teun really enjoyed working with the models and the results are stunning. Haven't seen the movie but I hear the opening was nice...