Why does Earth’s orbit make a flower shape?

Question

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?

In: 1

Answer 1

The earth and moon orbit each other. The earth is not fixed as the moon revolves around it. They are a pair and rotate around a point between the earth and moon. So the earth’s orbit around the sun would look like a flower.