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The BBC's Virgin Galactic: Sir Richard Branson rockets to the edge of space includes the image below.
Much of the Unity spacecraft appears (almost) transparent in this image; you can see the blue sky right through it. Why?
Unity soars into the New Mexico sky (Virgin Galactic via BBC)
Here at apogee the spacecraft now looks white:
Screen shot from embedded video in the BBC article.
The moment Sir Richard Branson's rocket plane reached its highest altitude
Much of the Unity spacecraft appears (almost) transparent in this image; you can see the blue sky right through it.
This is absolute nonsense; you cannot see the sky through Unity's airframe. It is opaque.
The upper surface of Unity is indeed painted mainly white.
The underside appears to be painted in a dark blue and black iris-and-pupil design, providing contrast for the "Virgin" logo in white.
Oh my, so much downvoting just for naivete! What this question is about is called aerial perspective. It's commonly seen with mountains, because they can be quite far from the observer:
Of course, the mountains don't become more transparent the farther they are, they are just behind a thick layer of air that scatters sunlight into the observer and thus masks the objects behind it.
In fact, this is the same effect that makes lunar maria look blue instead of their normally gray/brown color:
(image source: a post by Dan Finnerty at DPReview)
