Can't see my final render

Using eevee, after i press ctrl f12 i see only a tiny sliver of my camera view.

In the viewport camera view, everything looks just how i want it.

Anyone know off hand somethings that could be causing this?

Your given info are too few.
It could many causes, for example Ctrl+F12 is “Render Animation”, not “Render” it could render something that you dont expect.
It could be that you’ve activated “Render Region” and the region is set to a portion of your camera view.
It could be that your camera clip end is too low for your scene.

Add info, for example pictures of what happens.

I figured out the issue. The box generation my dust would not become transparent after the final rendering even though it was in the viewport. I still dont know why, but i just worked around the problem creating my cosmic dust in a different way.