Launched in 1958 and silent since the Johnson era, Vanguard 1 is the oldest human-made satellite still orbiting Earth — and a ...

In the intense early days of the space race, a small, unusual satellite was launched into space sixty-seven years ago.

A proposed mission seeks to retrieve Vanguard-1 and display it as an ancient relic of the space age.

An emotional rescue for America came via the first U.S. artificial satellite. Explorer 1 was boosted into space by the Army on Jan. 31, 1958. Nevertheless, despite setbacks, Vanguard 1 did reach orbit ...

Thousands of software engineers, systems engineers and software developers work for some of the nation’s largest defense ...

As Earth's orbit becomes populated with more crafts and devices, researchers are looking for ways to detect and track potentially dangerous debris that could pierce satellites and space stations.