Astronomers have discovered WASP-193 b, a giant planet with a density comparable to cotton candy. This extraordinary planet, located about 1,200 light-years away, is 50% larger than Jupiter — the largest planet in the solar system — but with one seventh of its mass. The international team of astronomers led by the EXOTIC Laboratory at the University of Liège, in collaboration with MIT and the Astrophysics Institute in Andalusia, was stunned by the discovery. Current planetary formation models cannot account for such ‘fluffy’ planets, but they nevertheless exist. “WASP-193 b is the second least…