Number one was a sterile planet with a flat dusty surface and the faint outline of what probably had been another fort.

One more sterile planet ready to be reseeded shark style.

Sharks, shark people, staging base, sterile planets, weapons-they all ran through my mind.

For one thing Helconya's effectively a sterile planet.

But how," I asked, "were they not aware of your interference, of your creation of a sterile planet?

In the context of space exploration, Haynes describes ecopoiesis as the "fabrication of a sustainable ecosystem on a currently lifeless, sterile planet".

A seed for a biosphere was terraforming jargon-for all the plant and animal species required to render a sterile, but theoretically habitable planet ecologically stable.

This reads as a brand-new, sterile planet, right out of the replicator.

They escaped with a ship and some stolen technology, and hid here, on a dead, sterile planet, where they thought they'd be safe.

Was Krypton a cold, sterile planet or one brimming with hope?