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Lunar eclipses occur when the Moon passes through the shadow cone of Earth
This animation demonstrates the process of star development for average and massive stars.
The Earth’s continents have been in constant motion during the history of the planet.
Learning about the geographic location, capitals and flags of the world´s countries through...
The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5...
Dry land on the surface of Earth is divided into continents which are separated by oceans.
Possible traces of water and life are sought on Mars.
The geographic coordinate system enables every location on the Earth to be exactly specified.