Abstract A giant-impact origin for the Moon is generally accepted, but many aspects of lunar formation remain poorly understood and debated. Ćuk et al. proposed that an impact left Earth–Moon system with high obliquity angular momentum could explain Moon’s orbital inclination isotopic similarity to Earth. In this scenario, instability during Laplace Plane transition, when orbit transitions from...

Abstract Stellar obliquity, the angle between a planet’s orbital axis and its host star’s spin axis, traces formation evolution of planetary system. In transiting-exoplanet observations, only sky-projected stellar obliquity can be measured, but this deprojected using an estimate obliquity. paper, we introduce flexible, hierarchical Bayesian framework that used to infer distribution solely from ...

Abstract Planetary climates are strongly affected by planetary orbital parameters such as obliquity, eccentricity, and precession. In exoplanetary systems, exoterrestrial planets should have various obliquities. High-obliquity would extreme seasonal cycles due to the change of distribution insolation. Here, we introduce Non-hydrostatic ICosahedral Atmospheric Model (NICAM), a global cloud-resol...

One of the most enigmatic features of Cenozoic long-term climate evolution is the long-lasting positive carbon-isotope excursion or “Monterey Excursion”, which started during a period of global warmth after 16.9 Ma and ended at ∼13.5 Ma, approximately 400 kyr after major expansion of the Antarctic ice-sheet. We present high-resolution (1–9 kyr) astronomically-tuned climate proxy records in two ...

Context. It is widely accepted that the large obliquity of Uranus is the result of a great tangential collision (GC) with an Earth size proto-planet at the end of the accretion process. The impulse imparted by the GC affected the Uranian satellite system. Nine irregular satellites (irregulars) have been discovered around Uranus. Their orbital and physical properties, in particular those of the ...