Voyager space probes

The Voyager space probes were the first man-made objects to leave the Solar System. They gather data about outer space and carry information about humanity.

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System of public utilities

System that satisfies consumers’ demands of water supply, wastewater disposal, electricity, heat...

Flood defence system

The protective embankment, or, in case of minor floods, the summer dyke ensures the protection...

Hydroelectric power plant (Hoover Dam, USA)

The huge dam built on the Colorado river in the US was named after a former American President.

Satellite types

Satellites orbiting the Earth can be used for civilian or military purposes.

The European Union

Learn about the history and economic operation of the European Union.

Water pollution

The main sources of water pollution are industry, agriculture and urban areas.

Kepler space telescope

The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars

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