skies

For the unsettling answer, look at what’s buzzing mysteriously in the skies above Europe’s cities.

Ms Mertens and Mr Simmonds added: "We're so excited to present this music in an immersive outdoor setting complete with the authentic food, activities and the big open skies of an American state fair."

When three Russian fighter jets entered Estonian skies without permission in September, Italy, Finland and Sweden scrambled jets under Nato's mission to bolster its eastern flank.

The stealth-fighters’ capabilities and advanced radar and targeting systems allowed Israel to batter Iran’s air defenses at the start of the war, giving it air superiority in Iranian skies.

On a crisp morning in California’s Mojave Desert, the skies cleared just enough for a jet to take off—and go supersonic.