Space. That shape in the thumbnail is actually a demonstration of the boolean function. However, it is also a view of a special 3d shape called a hyperbola (this is a hollow hyperbola). A hyperbola is like two identical cones, points touching. A bit like an hourglass.
100% made in either the bitmap or vector editors. Music is Unity by TheFatRat Many art tips/design tips projects I've seen say to avoid using the Scratch art editors. Here I argue against that and present my points. A perfect example of the Scratch vector editor's usefulness is @Hanzhe.