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)
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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).