Astronomers have identified the largest "super-puff" planets ever observed—two gas giants with the volume of Jupiter but densities lower than cotton candy. The featherweight pair orbits a Sun-like star named TOI-791, located 1,110 light-years away in the constellation Volans (the flying fish). Their density is comparable to shaving foam fresh from a can, according to University of Oxford researcher George Dransfield, who led the study published in Monthly Notices of the Royal Astronomical Society.