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Leaving the Sun and traveling at the speed of light, it would take about 4.22 years to reach Proxima Centauri, the Sun's nearest neighbor and part of the star system Alpha Centauri. Move farther from the Sun to see more stellar neighbors of the Sun. Hover your mouse over a star to learn more about it.
Contributed by: Jeff Bryant (March 2011)
Open content licensed under CC BY-NC-SA