The moon is also involved: Its gravity pulls on the Earth’s body and the water masses on it. Thus, two water crests form – below the moon and on the opposite
The Earth’s axis is tilted 23.4 degrees relative to the orbital plane. Thus, the North Pole points most strongly towards the sun on 21 June. Summer starts in
One direct hit and that’s it: The moon was formed from the collision of two young planets – at least that’s the theory:
The planets and all other objects in the solar system leisurely move in their orbits around the sun – or so it seems. But the objects influence each other
Water smells and tastes of nothing. It is transparent and colourless. And it is the only substance on earth that occurs in solid, liquid and gas form in large
There will probably soon be small stations on the moon or Mars. People will then live there for a limited time and explore the environment.
Small bodies – these are all objects smaller than dwarf planets. Their gravity is not sufficient for a spherical shape. This class includes asteroids, comets
A huge supply of fresh air: a good fifth of the atmosphere is oxygen, which all higher organisms need for life. This oxygen is produced by plants during
The sun sustains life on earth thanks to enormous energy. This is available to us almost indefinitely. Solar cells can be used to generate electricity from
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