Colorchallenge ::: balkon flying ini the sky

Balloon flying or air is a kind of airplane, a balloon that is pumped with air. A flying balloon can float in the air because of its buoyancy. Initially, the pumped air is hydrogen. Due to the risk of explosion, now helium noble gases are used as propulsion media. Every human being wants to explore the world to see the beauty of nature and scenery, including also seeing the beauty from above the clouds. Airing in the sky is not a strange thing anymore, we can use helicopters and airplanes.