There are moments in the history of human thought when a simple realization transforms our understanding of reality. A moment ...

But the simulations suggest that the inner Oort Cloud is not a nice, even, toroidal disk at all. Rather, it mirrors the shape of the Milky Way galaxy, with a spiral structure, and a warp to the disk ...

[PDF via NewAtlas] Inspired by some of the experiments with “ring wings” in the early 20th Century, researchers iterated on various toroidal propeller geometries until arriving at one that ...