A. Apollo 11
B. Sputnik 1
C. Explorer 1
D. Voyager 1
Answer: Sputnik 1
A. Apollo 11
B. Sputnik 1
C. Explorer 1
D. Voyager 1
Answer: Sputnik 1
Additional Information: Sputnik 1 was the first man-made satellite launched into space by the Soviet Union in 1957.
Subjects: Inventions and Discoveries, General Knowledge