Fly2School

Hot Air Balloon is a light than air vehicle. It consists of a large bag called envelope that holds the air inside, and a basket (or gondola) that is suspended beneath the bag in which passengers are carried. A source of heat mostly propane is carried, to heat the air inside the bag. Today, hot air balloons are used by tourists and adventurers to enjoy the flight.
Today’s hot-air balloons carry an onboard heat source mostly propane burner. They are able to fly very extreme heights and are safer than previous balloons. They have greater payload capacity and can cover long distances in a single flight.

Global warming
There many things powerful enough to disturb the life on the Earth. Earth quakes, Tsunamis, volcanic eruptions, terrorism and nuclear blasts etc. All these forces affect the land, even the continent but their effects are quite localized.
When we turn towards the changes in temperature of earth the whole story changes, it represents the greater threat than anything else humans have faced in recent time.
Global warming is the gradual rise of the earth’s average temperature. Its effects on the life are very devastating, forcing many species throughout the globe into extinction, making them harder to survive.
Earth has gone through many temperature changes before and several ice ages. The temperature changes in small amount but the impacts are very large. When earth warmed up, it melted the ice. When its temperature decrease, ice builds up.

Spacecraft fly differently than aircraft which rely on atmosphere and wings or propellers. Spacecraft are pushed to space from the Earth with the help of powerful rockets. When a spacecraft successfully leaves the Earth’s atmosphere behind, it is then pushed by another set of rockets to set it around an orbit of the Earth. In the orbit, the spacecraft doesn’t fall back on the Earth.
A deep-space spacecraft, which go beyond the influence of the Moon and Earth, have boosters installed in them. After the rockets have successfully pushed them beyond escape velocity of the Earth, the spacecraft than use its boosters for driving itself towards the destination.
Furthermore, the spacecraft doesn’t need a constant push of the rockets in space to maintain their speed. Because there is no air in space that can cause air friction and slows down the spacecraft like here on the Earth.

European Airshow Calendar 2022
Airshows are hugely important events, they provide a great source of entertainment but there is much more to them than that. An airshow is a single event, with many strands and purposes sitting within it, from economic benefits, trade, international diplomacy, innovation, tourism, and all that even before the first aircraft takes to the skies. An air show is a public event where aircrafts are exhibited. They often include aerobatics demonstrations, without them, they are called "static air shows" with aircrafts parked on the ground.
The European Airshow Calendar contains the latest dates for airshows across Europe.
Source: www.air-shows.org.uk