The Heisenberg uncertainty principle
Can tell me you've moved
But it can't tell me how fast;
Or it can tell me
You're nearing light speed
But not if you're coming closer
Or moving farther away from me.
Yet I can feel the sunlight
I know it takes eight minutes
From the central fire of the solar system
To reach my skin
And so it is, I can sense the flame
Of your presence
Even a million years distant:
Nothing else gives off as much light.