The Angry UFOlogist

OTD in Space – March 17: U.S. Launches Its Second Satellite, Vanguard 1

Thanks! Share it with your friends!


You disliked this video. Thanks for the feedback!

Sorry, only registred users can create playlists.



On Saint 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. The main purpose of this mission was to test a new three-stage rocket. Vanguard 1 was the fourth satellite ever launched into space (following Sputniks 1 and 2 and Explorer 1). It looks a lot like a miniature version of Sputnik. Vanguard 1 was tiny compared to the satellites that came before it. It's about the size of a grapefruit and weighs only 3 pounds. Solar technology allowed the satellite to transmit signals to Earth for 7 years, while battery-powered satellites couldn't even last a month. Scientists think the satellite will deorbit by the year 2198 after spending 240 years in space.

Post your comment