The United States' first satellite, Explorer 1, is launched into orbit by a Jupiter C rocket at 10:48 p.m. EST, on Jan. 31, 1958. Explorer 1 confirmed existence of high-radiation bands above the Earth's atmosphere.
Photo credit: NASA
The United States' first satellite, Explorer 1, is launched into orbit by a Jupiter C rocket at 10:48 p.m. EST, on Jan. 31, 1958. Explorer 1 confirmed existence of high-radiation bands above the Earth's atmosphere.