Question

How many AU to nearest star?

Answer 1

(about 268,770 AU.) When we talk about the distances to the stars, we no longer use the AU, or Astronomical Unit; commonly, the light year is used. A light year is the distance light travels in one year - it is equal to 9.461 x 1012 km. Alpha Centauri A & B are roughly 4.35 light years away from us .