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NO!!!

They orbit in an ellipsoidal fashion.

From a given starting point the planet will trace an ellipse back toi its original starting point. However, that ellipse orbit doesn't quite close up, but overlaps, hence the word. ellipsoidal'. This was first observed by Mercury's track about the Sun.

The Sun lies at one of the foci (Not focuses), of the ellipse. The other focus may be though of as a 'blind' focus. The Sun does NOT lie at the centre of the ellipose.

This ellipse can stretch to a long narrow ellipse, or 'fatten' to a nearly circular ellipose. All this occurs over thousands of years.

Have a search in Wikipedia , for Johannes Kepler and separatelt Milutin Milankovic(h).

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lenpollock

Lvl 16
1y ago

What else can I help you with?