How Squished Is That Planet? Astronomers Measure Oblateness of a Sub-Neptune
HIP 41378f — a cold, puffy exoplanet with four known siblings — becomes one of just a handful of planets with an estimate of its rotation period. The post How Squished Is That Planet? Astronomers…
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"Only a handful of these super-puffy planets are known, and it is even rarer to find two in the same system."
space.com·14d agoAstronomers discover two ultra-low-density 'super-puff' exoplanets orbiting dwarf star TOI-791
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