Laura is a science news writer, covering a wide variety of subjects, but she is particularly fascinated by all things aquatic, paleontology, nanotechnology, and exploring how science influences daily life. Laura is a proud former resident of the New Jersey shore, a competitive swimmer, and a fierce defender of the Oxford comma.
Low-density “cotton candy planets'' continue to be a cosmic puzzle for astronomers. Despite being 50 percent bigger than the gas giant Jupiter, exoplanet WASP-193b is seven times less dense. This extremely low density is comparable to that of light and fluffy cotton candy, according to a study published May 14 in the Nature Astronomy.
In this study, the team used observations taken from the TRAPPIST-South and SPECULOOS-South observatories in Chile to measure the WASP-193b’s signal in different wavelengths and make sure it was a planet. They also used data collected by the HARPS and CORALIE spectrographs to measure the planet’s mass . All of these measurements surprisingly concluded that WASP-193b has a staggeringly low density. Its mass and its size are about 0.14 and 1.5 that of Jupiter. That means its density is about 0.
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