60 . NASA

3830
31 2018

31 2018 60- "-1" ("Explorer-1") 60 .

NASA Facebook "-1" 1958 , 2017-.

, NASA, , .

"-1" . ̳ 1 1958 .

"-1" 23 1958 , .

ϳ 12 31 1970 . ³ 58 .