An unusual planetary system with three known ultra-low density “super-puff” planets has at least one more planet, according to new research led by researchers from Penn State and Osaka University.
Kepler-51d
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
A Fourth Planet In The Kepler-51 System Revealed By Transit Timing Variations
Kepler-51 is a ≲1 Gyr-old Sun-like star hosting three transiting planets with radii ≈6-9R⊕ and orbital periods ≈45-130 days. Transit timing variations (TTVs) measured with past Kepler and Hubble Space […]