spy satellite
spy-in-the-sky informal

The new service will be given the most modern technology available, including spy satellites, he said.

"The vehicle has been seen by American spy satellites for several years."

He didn't care if the American spy satellites were overhead.

So, a good spy satellite might have 1-meter resolution like this.

Its value, given the power of spy satellites, needs explaining.

Using a spy satellite, they were able to follow the enemy's every movement.

That left spy satellites as the primary source of information.

"These people'll be able to tell you things your spy satellites never dreamed of."

The spy satellites have already played key roles in the crisis.

You're between me and the closest spy satellite; the other one's too far to see much.