How long could it take to traverse one small part of a planetary surface?

"A planetary surface is a bad place for an industrial economy," she went on.

A river is a moving body of water on a planetary surface.

She looked at the reports on the planetary surfaces again.

I haven't lived that long on a planetary surface, you know,' he replied.

"Whether a person lives on a planetary surface or in space?"

Nobody's willing to try even that much, down on a planetary surface.

There's no way I can approach a planetary surface in this form.

Beneath the ship lay a planetary surface and it was far too close.

It was what came of living on bare planetary surface.