Verified65% confidenceFactTime unknown
Since 1972, humans have never left low Earth orbit to travel beyond the Moon.
3
Sources
65%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Sources
星际旅行能实现吗？从光帆到100年星舰的科学路线图
youtubeNational Geographic
Related Entities
Related Claims
UnverifiedThe Moon is tidally locked, and the lunar geostationary orbit calculated in isolation is approximately 87,000 kilometers above the lunar surface, but it is strongly perturbed by Earth, whose mass is 81 times that of the Moon.66% similarUnverifiedVoyager 1 was launched in 1977 and is currently more than 24 billion kilometers from Earth, making it the farthest human-made object.54% similarUnverifiedThe Moon's diameter is approximately 1/400 that of the Sun, and the distance from the Moon to the Earth is also approximately 1/400 of the Sun-Earth distance, allowing the Moon's shadow to completely cover the solar disk.53% similarUnverifiedThe United States launched its first Landsat satellite in 1972.52% similar
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