Like new and protective parents, engineers watched as the TETWalker robot successfully traveled across the floor at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Robots of this type will ...
The original version of this story appeared in Quanta Magazine. In 360 BC, Plato envisioned the cosmos as an arrangement of five geometric shapes: flat-sided solids called polyhedra. These immediately ...
A tetrahedron is the simplest Platonic solid. Mathematicians have now made one that’s stable only on one side, confirming a decades-old conjecture. In 360 BCE, Plato envisioned the cosmos as an ...