Hundreds of dedicated amateur scientists continued to help NASA and other agencies track satellites.

The beams of light will be made steady enough to track and hit satellites hundreds of miles away.

Our intelligence sources have been saying for ten years that the Soviets are on the verge of developing the capability to track and hit satellites with lasers.

This technique uses satellites to track other satellites.

The systems in the Monge allow it to track missiles and satellites.

Discovery will carry a satellite to track other satellites and relay data to earth.

Over the years, Miracl has been improved so that its beam is steady enough to track and hit satellites orbiting hundreds of miles overhead in space.

The antennas were used to make radar and radio astronomical observations and to track satellites and planetary explorers.

"They've been using that laser to track satellites."

For the first time, this gave the PRC the ability to track launches and satellites that were not over their territory.