This Hubble Space Telescope visible-light view of the edge-on disk of
dust around the star Beta Pictoris yields telltale evidence for the
existence of planets. The "false color" image shows gradations in the
brightness of the disk, caused by the fact that the disk shines by
reflected starlight, and so the farther the dust is from the central
star, the fainter it is. The bright glare of the central star is
blocked by a black circle which divides the disk into left (east) and
right (west) components.