Earth's axial precession is a gyroscopic wobble, analogous to a spinning top, causing its axis of rotation to trace a cone over time. The primary cause of Earth's precession is the gravitational ...

In the early 1600s, based on astronomical observations, Kepler established that the orbit described by a planet in the solar system is an ellipse, with the sun occupying one of its foci. Assuming that ...

Marine sediment analyses suggest that over the past 400,000 years, the hydrological cycle over the Western Pacific warm pool was controlled by local incoming solar radiation. Kazuyo Tachikawa and ...