People see the sun every day.If it is fine,we can see the moon in the night,too.The sun and the moon are very near us .They are the nearest neighbours in space.
Light t【ravels】 at 300,000 kilometers a second.Light reaches us from the moon in 【less】than a second and a half.The moon is about 382,000 kilometers 【away】 from us.
Light from the sun reaches us in 8.5 【minutes】.The sun is about 149,640,000 kilometers away from the 【earth】.Other stars are much 【farther】away than the sun.Light from the nearest star reaches us in about four years.When you look at a star,it is very 【small】.But in fact many of them are much bigger than the sun.They look small only 【because】 they are much farther away than the sun.