The animation demonstrates the different flower types of angiosperms.
Yuri Gagarin became the first human in space on 12 April 1961.
Built in Neo-Byzantine style, this Orthodox cathedral is one of the symbols of the Bulgarian capital city.
Chess games can help to develop logic skills.
This animation introduces body parts on a male anatomical model.
Nuclear power plants convert the energy released during nuclear fission into electric power.
Marie Curie, the only person to win the Nobel Prize in two different sciences, is probably the most famous woman in the history of science.
The heart is the central pump of the cardiovascular system beating several billion times over our lifetime.
This animation shows the electron configuration of the calcium atom.
The skin is the soft outer covering of our body, its three layers are the epidermis, the dermis and the hypodermis.
A phase transition is the change of a substance from one state of matter to another.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
The 900 years old Benedictine abbey is situated in Melk, on the right bank of the Danube.
This animation demonstrates the structure of nitrogen molecules, with one sigma and two pi bonds holding the atoms together.
Major phases in the history of theories and views about the structure of the atom.
This animation explains transparency and opacity, the principle of radiography, and the light-absorbing properties of materials.
The Benz Patent-Motorwagen is widely regarded as the first vehicle propelled by an internal combustion engine.
This Pacific island is famous for its unique monolithic human figures.
Our body´s internal support structure to which skeletal muscles are attached.
The legendary city of the Mayan-Toltec Empire was located on the territory of present-day Mexico.