Due to their asymmetrical profile of the wings, lift is produced while flying at a high speed.
During its orbit around the Earth, the visibility of the Moon's illuminated part constantly changes.
Jupiter is the largest planet of the Solar System, it has two and a half times the mass of all the other planets combined.
Machinery that pumps crude oil to the surface
Possible traces of water and life are sought on Mars.
Mercury is innermost and smallest planet of the Solar System.
Thermal power stations convert energy released during the combustion of fossil fuels or renewable resources into electricity.
Neptune is the outermost planet of the Solar System, the smallest of the giant planets
Geothermal power stations convert energy of hot, high-pressure water found in deeper layers of the Earth into electricity.
Uranus is the 7th planet from the Sun, a gas giant.
Venus is the 2nd planet from the Sun, the brightest object on the night sky (after the Moon).
The length of the metal frameworks of bridges change when the temperature changes.
Submarines submerge and surface by changing the average density of the hull.
Saturn is the second largest planet in the Solar System, easily recognisable by its rings.
The concentration camp established on Polish territory was the administrative centre of a huge camp complex.
The palace of Charlemagne was not only the centre of his empire, but also a centre of culture.
An entertaining animation to practise orientation using a map.
Dogs are the domesticated subspecies of grey wolves.
This animation demonstrates the most important seas and bays.
This animation demonstrates how electric steam irons work.