Why do objects reflect the sky as black? I can see everything else I can even see the sun but The sky always shows up black what gives?
Hey ,
Select the Reflection Capture from the Scene Outliner, and press Update Captures from the details panel, you should get proper reflections now. 
yeah I have tried . shows it a little better.
See how the top is just black it is like there is a cubemap and the top is black. and that is from the sample scene
I just looked at one you show above, and was able to add a Skylight to the scene, then turned it’s roughness down to 0 in the material, then I made the reflection Re Capture the scene.
is what I got:
As you can see it is not actually black being reflected, it is just a darker color of blue from the atmosphere, when the roughness value is set to 0.2 it seems the light is scattering.
Here is a shot of the sky, compare it to the reflection in the image above:
