RT @AscendingNode: #Sputnik1 was launched on R-7, and its core stage (28 x 3 m) also reached orbit. That stage is what visual observer… twitter.com/i/web/status/7…
RT @AscendingNode: #Sputnik1 was launched on R-7, and its core stage (28 x 3 m) also reached orbit. That stage is what visual observer… twitter.com/i/web/status/7…