Why is the Earth spherical?
The video explains why the Earth is round.
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Space
Visit to the National Observatory of Athens
The video is a short virtual tour of the National Observatory of Athens. The viewer can see the meridian transit telescope, a replica of the Antikythera mechanism (the world’s oldest computer) and the Doridis telescope.
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The Solar system – Science lesson for primary school classes
The video explains the solar system to children.
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The solar system
In the video, a model of the solar system is created, and the various planets and their order in relation to the Sun are learned.
The seasons
The video introduces the Earth’s axis of rotation. It shows how light from the Sun reaches some areas on Earth more than others.
These calculations changed our universe
This video explains the story of two scientific discoveries: the discovery of Neptune and the prediction of black holes.
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Why are planets spherical?
This video briefly explains why planets are spherical.
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Is there oxygen on Mars?
The NASA engineer Asad Aboobaker explains that there is Oxygen on Mars and that a new technology called “MOXIE” has proven that we could convert Martian CO2 into oxygen for use by future explorers.
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