For centuries, telescopes have relied on curved lenses and mirrors to observe the Universe. A team of researchers has ...

cells subject to physical stress from crowding by neighbors can find some relief by dramatically slowing their own growth—and in doing so form an eye-catching pattern of concentric circles as a ...

Captured here is a laser diffraction pattern, visible as a series of concentric circles with a bright central area. This pattern is a result of light waves spreading out and overlapping after passing ...