你能想象比自己大10倍的东西是什么样吗？如果是1000000000000倍呢？有一个非常巧合的冷知识：如果按照体积来计算的话，你的身高，可能刚好处于宇宙中各种尺度的正中间。在本期视频中，不同于网络上其他所有的“比大小”。这种全新的展现方式，一定能让你对“宇宙的尺度”，有一个全新的认知。
A three-story building is about 10 meters tall, six times bigger than you.
In the opposite direction, six times smaller than you, you get things like a cute squirrel about 27 centimetres small.
So the building is just as big relative to you as you are to a squirrel.
You're in the middle.
It's easy to understand.
In fact, you are in the middle of everything in the Universe.
Let's go on a fantastical journey together, to the small and the large and see if it's really true!
An A320 is 37 meters long.
The Rufous hummingbird is around 7 centimetres.
Both of these fliers are 23 times bigger or smaller than you, and both fly intercontinental distances - the tiny bird migrates between Alaska and Mexico!
