A Calabi-Yau manifold is a kind of six-dimensional surface that has very special properties. These special properties mean that Calabi-Yaus play a central role in String Theory research.
This isn't an action shot of a cube of metal as it falls to the ground. This is real life levitation.
The universe in colour! ...or not. The object I'm focusing on today is almost completely black, it gives off virtually no radiation of any sort.