He promptly felt hungry again, for the first time since planetary orbit.

And they were planetary orbits; no doubt of that.

"Then break off and follow the two ships heading for planetary orbit. "

Only the captain could turn on that light; it indicated we were officially in stable planetary orbit.

Quite so; thus we rule out starting inside a planetary orbit without being aware of it.

A comet and its dust allow investigation of the solar system beyond the main planetary orbits.

To explain why we can't leave planetary orbit to go meet it.

It has one of the most eccentric planetary orbits known.

This broadcast is being recorded on my deepspacer up above me in planetary orbit.

Nothing shot at Jacaranda as we settled into planetary orbit.