Russia on Thursday celebrated the 50th anniversary of the Sputnik launch that opened the space age, with officials seeking to revive the glory of the Soviet program, although some experts worry about a loss of momentum for new missions.Goose-stepping...

Goose-stepping guards and medal-bedecked space veterans laid flowers at the Kremlin wall tomb of the father of the Soviet space program Thursday as Russia celebrated the 50th anniversary of the launch of Sputnik, the world’s first artificial...

With a series of small beeps from a spiky globe 50 years ago Thursday, the world shrank and humanity’s view of Earth and the cosmos expanded.Sputnik, the first artificial satellite, was launched by the Soviets and circled the globe Oct. 4, 1957. The...