短片简介:
光只需要八分钟就能从太阳到达地球。也就是说,如果太阳不发光了,黑暗从太阳到地球也只需要八分钟。
It takes only eight minutes for light speed to bring sunlight from the sun to the earth. Consequently, it would take only eight minutes for darkness to reach from the sun to the earth if sun went off shining.