The planet will not come into position as a target again until 1991.

He really wanted to know where planets came from and how.

Such a planet did come into existence - the only one in the entire universe!

Why did those two planets come to terms so quickly?

"Once your doorway in time is complete, this planet will come apart."

On one side, the third planet came into his range of vision.

He felt silly asking them where an entire planet had come from.

I had missed the precious moment when the planet first came into view.

But nonetheless, when the planet came under attack, his safety had to be thought of.

"All we can say is that our planet has never come close a second time."