Explorer 1
/ɪkˌsplɔːrə ˈwʌn/
/ɪkˌsplɔːrər ˈwʌn/
- the first US artificial satellite in space. It was sent up on 31 January 1958 from Cape Canaveral, Florida, by the US Army. Explorer 1, which weighed 30 pounds/13.5 kilograms, discovered the Van Allen radiation belt. Several other Explorers were later sent up to study radiation and 'wind' from the sun.
探索者1：美国第一颗太空人造卫星。它于1958年1月31日由美国陆军从佛罗里达卡纳维拉尔角发射升空。重达30磅/13.5千克的Explorer 1发现了Van Allen辐射带。后来又派出了其他几个探险家来研究太阳的辐射和“风”。