› added 4 years ago
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TIL: Alpha Centauri ( α Cen) is the closest star system to Earth's Solar System at about 4.37 light-years or 25,600,000,000,000 miles (40,130,000,000,000 km) away from from the Sun. The flight to Alpha Centauri with the speed of Apollo 11 will take us over 100,000 years to complete.