Asteroid? Comet? Superman?

I was fascinated reading about the NASA test on the asteroid 11.7 million kms from earth. And hitting it with the DART travelling at 14,000 kmph.
Both are travelling at speeds beyond my comprehension.
The next few days will indicate if the impact was enough to move the asteroid's path ever so slightly off course.

I got to thinking, the NASA DART must have one helluva good Sat Nav.

Ah well...