Verified65% confidenceFactTime unknown
Proxima Centauri is the nearest star to the solar system, at a distance of approximately 4.24 light-years (about 40 trillion kilometers).
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
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Related Claims
UnverifiedAlpha Centauri is a triple star system composed of three stars — Alpha Centauri A, Alpha Centauri B, and Proxima Centauri — of which Proxima Centauri is approximately 4.24 light-years from Earth and is the closest star to Earth.69% similarUnverifiedThe Andromeda Galaxy is approximately 2.5 million light-years away.66% similarUnverifiedThe core challenge of directly imaging exoplanets is that a star's brightness is often billions of times that of its planets.62% similarUnverifiedThe star type with the largest radius in the known universe is the red supergiant, whose radius can reach about two thousand times that of the Sun, close to nine astronomical units; if placed at the Sun's position, its surface would engulf everything from Mercury to Jupiter and almost reach Saturn's orbit.60% similarUnverifiedSolar power decreases with the square of distance, falling to approximately 1/25 of its near-Earth value at Jupiter and to about 1% at Saturn.57% similar
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