Comets are spectacular celestial bodies orbiting the Sun.
There is a spot in the open ocean that is 2,688 km away from the nearest land.
The Earth is divided into 24 time zones. Standard time is the time used within time zones.
This animation demonstrates how the Earth and the Moon were formed.
Learning about the geographic location, capitals and flags of Asian countries through...
Mercury is innermost and smallest planet of the Solar System.
A presentation of the major administrative units of China.
Learning about the geographic location, capitals and flags of the world´s countries...
The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists...