June 19, 2018
Naval Research Laboratory Marks 60 Years in Space with Vanguard
Just more than 60 years ago the U.S Naval Research Laboratory (NRL) launched what has become the longest remaining man-made object in space.
Launched in March 1958, Vanguard I, a component of the Vanguard Project, is a small aluminum sphere (16.5 centimeters in diameter) that was designed to partake in the International Geophysical Year (IGY) — a series of coordinated observations of various geophysical phenomena during solar maximum, spanning July 1957 through December 1958.
By Inside GNSS