The experiment

So where is the center of universe?
Thus, the ETs excitedly experimented,
And downwards dropped the famed apple;

Cursedly, neither did it fall behind them,
As it would if they were in a forward moving body,
Nor in front of them like in a reversing body,
But right next to their green feet!

And, in awe and incredulity,
Thus, the ETs discovered, just like their home,
Earth is the center of the cosmos!