The International Space Station is a habitable satellite built with the cooperation of 16 countries.
Mercenaries of the ancient Roman army were well-trained and well equipped with the most up-to-date weapons.
Yuri Gagarin became the first human in space on 12 April 1961.
The 900 years old Benedictine abbey is situated in Melk, on the right bank of the Danube.
The popular model of the American automobile factory was the first mass-produced car in the world.
The English engineer George Stephenson’s locomotive was built for a competition of locomotives in 1829.
This animation presents some animals and plants that lived between the Devonian and Permian periods (358-299 million years ago).
The Cassini spacecraft was exploring Saturn and its moons for nearly 20 years.
This animation shows how trees change throughout the seasons, demonstrated by the example of English oaks.
Candles have been used for lighting since ancient times.
The ancient Roman arena became well-known for the chariot races held here.
Majestic even in its ruins, this city was the largest and most populous settlement in the pre-Columbian Americas.
RMS Titanic was the largest passenger ship at the beginning of the 20th century.
A Zeppelin is a type of rigid-framed airship.
The fortress-like palace was built by Roman Emperor Diocletian on the coast near his home town.
The theatre that has a distinctive shape and excellent acoustics was situated at the side of the Acropolis in Athens.
Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.
The New Horizons space probe was launched in 2006, with the objective to study Pluto and the Kuiper Belt.
Vertical forces can break up layers of rock into fault blocks, which then move vertically along the fracture planes.
The Wright Flyer was the first successful powered, heavier-than-air aircraft, designed and built by the Wright brothers.