Last night, I took a walk through the park on the way home. It was a nice evening, and as I wandered through the grass and trees, I took a few photos along the way.
One of the photos was of the sky. I looked up and took a photo of the sky. I posted it on Twitter and just labelled it “Up”. A couple of minutes later, someone sent me a picture of what they could see when they looked up. Then a couple more did. Then a few more.
This is what Twitter sees when it looks up:
(Click each image to enlarge)