Proxima centauri – We already know that our universe is quite big … euh very big. The closest star to the earth (except for our sun) is called proxima centauri and is at a distance of 4 light years. Quite far if you know that a light year is traveling a year with the speed of light (300.000 km/second). So that means that the distance is around 37.000.000.000.000 km. Our Sun is only traveling 8 light minutes from earth.