On St. Patrick’s Day in 1958, the U.S. Navy launched Vanguard 1, the first solar-powered satellite and the oldest artificial satellite currently orbiting the Earth. See how it happened in our On This Day in Space video series.
On This Day In Space! March 17, 1958: U.S. Launches Vanguard 1, 1st Solar-Powered Satellite
by Space.com | Mar 17, 2018 | Uncategorized |