[Space] Two Newly Confirmed Planets Are Less Dense Than Cotton Candy: Astronomers Find Rare Super-Puffs

[Daemon82]

Astronomers have confirmed two newly discovered super-puff exoplanets, worlds so diffuse that they are genuinely less dense than cotton candy despite being roughly the size of Jupiter. The pair's rare orbital relationship and extraordinarily lightweight, puffed-up atmospheres make them among the most unusual planetary discoveries reported this year, offering astronomers a rare natural laboratory for studying how giant planets can develop such extreme low-density structures.

Super-puff planets occupy a genuinely strange corner of planetary science. Despite having a physical radius comparable to Jupiter, the largest planet in our own solar system, these worlds have only a small fraction of Jupiter's mass, resulting in an overall density low enough that, in principle, the planet would float if placed in a large enough body of water. The phenomenon is thought to arise from extremely extended, puffy atmospheres heated and inflated by intense radiation from a nearby host star, though the precise mechanisms producing this degree of extreme inflation remain an active area of research, and confirmed examples remain rare enough that each new discovery adds meaningfully to the small catalogue of known cases.

The rare orbital relationship between this particular pair adds further scientific value beyond the individual planets' unusual densities. Studying how two such extreme, low-density worlds came to share a coordinated orbital configuration around their host star offers astronomers clues about the planetary formation and migration processes that produced such an unusual system in the first place, processes that remain only partially understood even after decades of exoplanet discovery have revealed thousands of worlds with an astonishing diversity of sizes, compositions and orbital architectures.

Two Rare Super Puff Planets Lighter Than Cotton Candy Discoveredwww.universetoday.com

[IronFist66]

A planet less dense than cotton candy is one of those facts that sounds like it should be a joke until you remember it is a genuinely precise scientific measurement of an actual world orbiting a distant star. The universe keeps being stranger than intuition suggests