Space

In two dimensions, it’s the Reuleaux triangle: an equilateral triangle with curved arcs connecting each corner, creating a shape with a constant width but a smaller area than a circle. Now, a team of mathematicians say they’ve scaled up the shape into the third dimension and beyond, finding it resolves a math problem…

At this point, modern Doctor Who has been around for almost as long as classic Doctor Who was—which means the opportunity for returning legendary baddies that the series hasn’t already taken is running rather thin.