The Moon is the Earth's only natural satellite
The inner planets of the Solar System are terrestrial planets while the outer planets are...
Several political and economic unions have been formed between countries during the past...
This animation demonstrates the most important seas and bays.
The apparent movement of the Sun is caused by the Earth's rotation around its axis.
Possible traces of water and life are sought on Mars.
Saturn is the second largest planet in the Solar System, easily recognisable by its rings.
This animation demonstrates the process of star development for average and massive stars.
This animation presents the regions, counties and cities of Hungary.