Vanguard TV3
（重定向自Kaputnik）
![](/Images/godic/202501/22/Vanguard_rocket_explodes3200.jpg")
![A team of Vanguard I scientists mount a Vanguard I satellite in the rocket nosecone.](/Images/godic/202501/22/A_team_of_Vanguard_I_scientists_mount_the_satellite_in_the_rocket3200.jpg")
![TV3 satellite on display at the National Air and Space Museum](/Images/godic/202501/22/TV3_satellite3200.JPG")
Vanguard TV3, also called Vanguard Test Vehicle Three was the first attempt of the United States to launch a satellite into orbit around the Earth. Vanguard 1A was a small satellite designed to test the launch capabilities of the three-stage Vanguard and study the effects of the environment on a satellite and its systems in Earth orbit. It was also to be used to obtain geodetic measurements through orbit analysis. Solar cells on Vanguard 1A were manufactured by Bell Laboratories.