Earth’s core has slowed so much it’s moving backward, scientists confirm. Here’s what it could mean
Some analyses even proposed that the core didn’t rotate at all. One promising model proposed in 2023 described an inner core ...
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How to make a scale model of the Sun and the Earth
It is difficult to imagine the difference in size between the Sun and Earth, or the distance between them. This activity will help you to visualise it. If you create this model, the Earth and Sun ...