The Cassini-Huygens Mission (1997-2017)
The Cassini spacecraft was exploring Saturn and its moons for nearly 20 years.
The apparent movement of the Sun is caused by the Earth's rotation around its axis.
A presentation of the major administrative units of China.
The largest satellite of Pluto is Charon.
This animation demonstrates the geographical locations of the Earth's major cities.
The Earth's continents have been in constant motion during the history of the planet.
Who wouldn’t be familiar with solar-powered calculators or windmills? Let’s have a look at the...
The geographic coordinate system enables every location on the Earth to be exactly specified.
The Earth is composed of several spherical layers.