Pentagon officials warned that the test had increased the threat to American satellites.

By the late 1950's, American satellites used solar energy to power radios.

Some type of construction at the site had been easily detected by American satellites.

American satellites are generally viewed as superior to Russian ones.

The push toward getting an American satellite into space started immediately.

A fleet of 66 such American satellites went into full operation late last year.

In size, movement and distance from the earth, this body was similar to the American satellite.

They are particularly interested in two suspected nuclear sites found by American satellites.

China, which offered low-cost services, launches about 10 percent of American satellites.

Realistically, American satellites are not in great physical danger today.