The Vangard III satellite to study the magnetic field and radiation belt in orbit. NASA successfully launched Vanguard III (SLV-7) from Cape Canaveral, Florida on September 18, 1959.
The Vangard III satellite to study the magnetic field and radiation belt in orbit. NASA successfully launched Vanguard III (SLV-7) from Cape Canaveral, Florida on September 18, 1959.