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Which spacecraft is the longest-operating probe in space?
Space ExplorationSpacecraft
Quick Answer
Voyager 1 is the longest-operating spacecraft still functioning. It has been operating since 1977.
The Full Story
Voyager 1 has the longest continuous mission of any spacecraft in human history. It launched in 1977 and continued collecting data as it flew past Jupiter and Saturn before heading out of the Solar System. Although several systems have been shut down over time to conserve power, it remains active and transmits data back to Earth. Its longevity is a result of careful power management and the durability of its hardware. Few missions in spaceflight have matched its endurance.
Key Facts
1.In operation since 1977
2.Flew by Jupiter and Saturn
3.Still transmitting data decades later
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"One probe launched in 1977 is still sending data from beyond the Solar System."