Earth is in a stable orbit sure, and I don’t think the aphelion and perihelion are changing but the orbit is slowly rotating around the Sun ultimately drawing a kind of flower-like shape. Why? Why does that not end up changing our aphelion and perihelion?
Can you give a visual of what you’re talking about? Because as far as I’m aware, Mercury is the only planet with significant precession of it’s perihelion.
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