The Vanguard I Satellite was powered by photovoltaic cells and launched on March.17, 1958 by the U.S. Signal Corps. The satellite power system operated for eight years.

Date:
      March 17, 1958
Name(s):
      Vanguard I
Occupation:
      US Military
Location:
      USA

Additional Information:

• Vanguard 1 – Wikipedia
  Vanguard 1 (ID: 1958-Beta 2) is an American satellite that was the fourth artificial Earth orbital satellite to be successfully launched Vanguard 1 was the first …
• Project Vanguard – Wikipedia
  Project Vanguard was a program managed by the United States Naval Research Laboratory (NRL), which intended to launch the first artificial satellite into Earth …
• Vanguard 1 – the NSSDCA – NASA
  Vanguard 1 (1958 Beta 2) was a small Earth-orbiting satellite designed to test the launch capabilities of a three-stage launch vehicle and the effects of the environment on a satellite and its systems in Earth orbit. It also was used to obtain geodetic measurements through orbit analysis.
• Vanguard Satellite, 1958 | NASA
  Mar 17, 2015 – Vanguard 1, the world’s first solar-powered satellite, launched on St. Patrick’s Day (March 17) 1958.
• 60 years in orbit for ‘grapefruit satellite’ – the oldest human …
  Mar 21, 2018 – When Vanguard 1 – the “grapefruit satellite” – was launched in 1958, its only companions were Explorer 1 and Sputnik 2. Soon it may have …