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Showing posts with label PlanetaryMotion. Show all posts
Showing posts with label PlanetaryMotion. Show all posts

Sunday, October 4, 2020

Apsidal Precession

 


Planets orbiting the Sun follow elliptical (oval) orbits that rotate gradually over time (apsidal precession). The eccentricity of this ellipse, as well as the rate of precession, is exaggerated for visualisation. (Source: Wikipedia)

Wednesday, September 30, 2020

Rotation Speed and Axial Tilts of the Planets in Our Solar System

 


Dr. James O’Donoghue, a Planetary at NASA Goddard created a brilliant animation of the planets in our solar system. Using NASA imagery for each planet, O’Donoghue plotted the exact rotation periods (in hours and days) and the angle at which they rotate (axial tilt).

Previous Posts

Changes in Eccentricity (Orbit Shape) of Earth