Dark Shadows on White Clouds

Down below
I see shadows on clouds,
Which itself is arresting

A carpet of clouds at twenty thousand feet
As far as anyone here can see
Which means there must be a
Sheet of something else up above

It could be it happens every day,
Yet today is the first day
I've recognized it,
Considered it, and smiled about it

Shadows, you see, I think of
As landing on the ground alone
When I stand and await the clouds
To block the searing heat of summer sun

Shadows, instead, are cast
Any time any object
Moves between a light source and
Any other object

And now that I've thought about it,
There are no more shadows on the clouds.
But Seriously!
One day I will return to consider this.