This makes Vanguard Earth’s longest-orbiting artificial satellite, as well as the oldest ... launched into orbit — Sputnik 1 and Sputnik 2 — were sent on smaller rockets.

The Navy will have overall supervision of Project Vanguard. The satellite itself is the responsibility of the National Academy of Sciences and the National Science Foundation. Its size has not ...

Launched in March 1958 and named Vanguard-1, it was the first satellite powered by solar electric ... and evaluation) and Part 2 (if practical, capture and return to Earth). These could be done ...

Official responsibility for the satellite fell to the Naval Research Laboratory (NRL), which based the design on German V-2 and Viking rockets used to probe Earth's upper atmosphere. Vanguard's ...

The satellite, named Vanguard-1, was a test of launch capabilities during the early days of the historic space age. Other satellites of its time have reentered through Earth’s atmosphere ...

This makes Vanguard Earth’s longest-orbiting artificial satellite, as well as the oldest human-made object ... The first two satellites successfully launched into orbit — Sputnik 1 and Sputnik 2 — ...