A billion miles away

We spend billions and billions of dollars to build the probe.
So many tests and fixes and re-tests.
Hauling it up to the rocket and fitting it.
Launching it, and slingshotting it from planet to planet.
Parking it in orbit with the gentlest and most cautious braking rocket thrusts.
Success! Success!
We all cheer!
Time to work.
It takes 90 minutes for commands to reach the probe.
And 90 minutes for confirmation to return.
A billion miles away, we wait for the images to appear.
Black. More black. Endless black.
Only then do we realize… nobody took the lenscap off.