No worries; thanks for the test clip.
I think the planet is darker than the rest of the image, and too crystal clear. I'd suggest blurring the planet overall, and making it a bit brighter. I know this goes against what I'd said earlier, but the wmv files on my computer end up looking very bright, and the bright image makes these things more noticeable.
The streaks are gone though! It looks good, but it still sticks out as a composite, due to brightness and clarity differences.