[填空题]
Assume that the nearest stars to us have an absolute luch: w/ km6xmzn;s6ne3minosity3 pzqj q5jd,/p about the same as the Sup/qq j dpj,5z3n's. Their apparent brightness, however, is about $10^{-11}$ times fainter than the Sun. From this, estimate the distance to the nearest stars. (Newton did this calculation, although he made a numerical error of a factor of 100.) ly
