Q: As early as 1946, the idea of cameras in orbit to observe the weather was being developed. This was due to sparse data observation coverage and the expense of using cloud cameras on rockets. By 1958, the early prototypes for TIROS and Vanguard (developed by the Army Signal Corps) were created. The first weather satellite, Vanguard 2, was launched on February 17, 1959. It was designed to measure cloud cover and resistance, but a poor axis of rotation and its elliptical orbit kept it from collecting a notable amount of useful data. The Explorer VI and VII satellites also contained weather-related experiments.

Answer this question: when was the first weather satellite launched into space?
A: February 17 , 1959
Explain how we arrive at this answer:
Explanation: This is the relevant information: The first weather satellite, Vanguard 2, was launched on February 17, 1959.