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A. Apollo 1
B. Sputnik
C. Apollo II
D. Voyager 1

Submitted by: zabih

Voyager 1 was the first spacecraft to cross the heliosphere, the boundary where the influences from outside our solar system are stronger than those from our Sun. Voyager 1 is the first human-made object to venture into interstellar space.

Correct Answer: Voyager 1

Last Updated: June 29, 2024