Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have captured high-resolution images of eight protoplanetary disks in Sigma Orionis, a star cluster irradiated by intense ultraviolet light from a massive star. To their surprise, they’ve found evidence of gaps and rings in most of the disks — substructures commonly associated with the formation of giant exoplanets. These ALMA images show rich disk structures around...