打开App
360P
一光年究竟有多远？用光年测量太阳系，结果会怎样？
在宇宙中，天体之间的距离是非常大的。如果我们用公里来衡量它们之间的距离，会非常的麻烦。用光年则简单多了。光年指的是光在宇宙真空中，沿直线在一年内经过的距离。那么一光年究竟有多远呢？如果我们用光年来丈量一下太阳系，结果会怎样呢？
奇妙的宇宙28/86
App07:15
App05:15
App05:24
App05:34
App07:25
App05:26
App06:34
App04:28
App06:56
App05:55
App04:41
App06:58
App06:32
App06:08
App05:07
App04:53
App08:05
App06:46
App05:36
App05:26
App05:30
App07:23
App06:30
App02:21
App05:59
App03:56
App06:29
App05:35
App05:20
App03:23
App04:23打开App观看
