The Earth is composed of several spherical layers.
The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5...
Uranus is the 7th planet from the Sun, a gas giant.
Lunar eclipses occur when the Moon passes through the shadow cone of Earth
Due to the Earth´s tilted axis the angle of incidence of sunlight is continuously changing...
The apparent movement of the Sun is caused by the Earth's rotation around its axis.
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
Dry land on the surface of Earth is divided into continents which are separated by oceans.