On February 23, 1990, NASA's Pioneer 11 spacecraft left the solar system! Space History Archives👉 https://space-com.visitlink.me/Umttkw This was the second spacecraft to travel beyond the planetary part of our solar system, which ends at Neptune's orbit. An almost identical spacecraft named Pioneer 10 made it past Neptune's orbit about seven years earlier. Both Pioneer spacecraft carried gold plaques with information about Earth just in case they encountered any aliens out there in space. On it
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