Nearly an hour passed before astrogation could tell Nick where he was.

But this little miracle of astrogation is going to cost someone.

I have tried to teach myself astrogation from the books at hand, but the mathematics involved are very difficult.

But he can learn astrogation, too, which is just as important."

Making him study astrogation while the ship was stuck at the bottom of an ocean!

It threatened to interfere with the astrogation of the ship.

Must I explain the basic elements of astrogation to you?"

Chekov began setting up the problem on his astrogation computer.

But, in truth, practical astrogation is much harder than I had ever dreamed.

The bear went silent, as did the ship's astrogation panel.

Yeah, probably the latter should be called "astrogation," but it wasn't.

He went to his console again, shifting from one astrogation chart to another.

It would mean as little to him as his astrogation tank did to her.

Fortunately we do have astrogation records for every interstellar trip.

They reported to the astrogation robot of the ship.

"Pity your work in astrogation doesn't show a similar improvement.

Again, a result not surprising to anyone who knew the difficulties of astrogation within the nebula.

Why patch an astrogation computer into a ground operation?

Daniel was setting up the astrogation display to check the course he'd already programmed.

The captain and navigation computer could then choose another solution to the astrogation task.

"Robert," she said to the astrogation officer, "you have bridge."

Jump into normal space long enough for an astrogation fix and you've got it."

It was as if somebody was sitting at the controls who knew nothing about astrogation.

Now I'm off to the boundless depths of space and classes in astrogation.

Once the computers wiped, the ship would lose astrogation, navigation.