Not planets, but these are some of my own astrophotography images captured a few years ago. This is what is possible by an amateur from a suburban backyard, but it needs the right equipment for astrophotography.
The P900 and other similar superzoom cameras are fine for some purposes but not for astrophotography. Photographing objects in space with this type of camera are likely to give results that are low resolution, poorly focused and have a lot of distortion.

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