So... a lonely cloud just after sunset? This is always the coolest thing to see when the sun under the horizon illuminates things at high altitude. It happens a

So... a lonely cloud just after sunset? This is always the coolest thing to see when the sun under the horizon illuminates things at high altitude. It happens a lot with rocket launches like this: https://i.ytimg.com/vi/K_zd8YAUYDY/hqdefault.jpg https://i.ytimg.com/vi/K_zd8YAUYDY/hqdefault.jpg