It was a battle in order to protect the Earth.

"Who the hell are they protecting Earth from all the way out here?"

He had somehow been chosen as the one who must protect Earth in relationship to the universe.

But we can protect the Earth, create a wall around it, a shell of atomic energy!

Efforts to protect the Earth from asteroid impact have been neglected.

Scientists' study the auroras to protect the Earth from their effects.

And what lengths will some go to protect Earth and our way of life?

With our resources at your disposal, you will finally have a real opportunity to protect Earth and her allies.

Next, we'll look at some of phenomena that protect Earth from the power of the sun.

We never would have succeeded without the people down there suggesting protecting the Earth with a bubble.